1 | "use strict";
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.arraySize = arraySize;
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7 | exports.validate = validate;
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8 | exports.validateIndex = validateIndex;
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9 | exports.resize = resize;
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10 | exports.reshape = reshape;
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11 | exports.processSizesWildcard = processSizesWildcard;
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12 | exports.squeeze = squeeze;
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13 | exports.unsqueeze = unsqueeze;
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14 | exports.flatten = flatten;
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15 | exports.map = map;
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16 | exports.forEach = forEach;
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17 | exports.filter = filter;
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18 | exports.filterRegExp = filterRegExp;
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19 | exports.join = join;
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20 | exports.identify = identify;
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21 | exports.generalize = generalize;
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22 | exports.getArrayDataType = getArrayDataType;
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23 | exports.last = last;
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24 | exports.initial = initial;
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25 | exports.contains = contains;
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26 |
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27 | var _number = require("./number.js");
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28 |
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29 | var _is = require("./is.js");
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30 |
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31 | var _string = require("./string.js");
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32 |
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33 | var _DimensionError = require("../error/DimensionError.js");
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34 |
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35 | var _IndexError = require("../error/IndexError.js");
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36 |
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37 |
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38 |
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39 |
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40 |
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41 |
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42 |
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43 |
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44 | function arraySize(x) {
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45 | var s = [];
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46 |
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47 | while (Array.isArray(x)) {
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48 | s.push(x.length);
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49 | x = x[0];
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50 | }
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51 |
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52 | return s;
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53 | }
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54 |
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55 |
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56 |
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57 |
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58 |
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59 |
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60 |
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61 |
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62 |
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63 |
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64 |
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65 | function _validate(array, size, dim) {
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66 | var i;
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67 | var len = array.length;
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68 |
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69 | if (len !== size[dim]) {
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70 | throw new _DimensionError.DimensionError(len, size[dim]);
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71 | }
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72 |
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73 | if (dim < size.length - 1) {
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74 |
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75 | var dimNext = dim + 1;
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76 |
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77 | for (i = 0; i < len; i++) {
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78 | var child = array[i];
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79 |
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80 | if (!Array.isArray(child)) {
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81 | throw new _DimensionError.DimensionError(size.length - 1, size.length, '<');
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82 | }
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83 |
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84 | _validate(array[i], size, dimNext);
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85 | }
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86 | } else {
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87 |
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88 | for (i = 0; i < len; i++) {
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89 | if (Array.isArray(array[i])) {
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90 | throw new _DimensionError.DimensionError(size.length + 1, size.length, '>');
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91 | }
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92 | }
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93 | }
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94 | }
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95 |
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96 |
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97 |
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98 |
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99 |
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100 |
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101 |
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102 |
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103 |
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104 | function validate(array, size) {
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105 | var isScalar = size.length === 0;
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106 |
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107 | if (isScalar) {
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108 |
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109 | if (Array.isArray(array)) {
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110 | throw new _DimensionError.DimensionError(array.length, 0);
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111 | }
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112 | } else {
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113 |
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114 | _validate(array, size, 0);
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115 | }
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116 | }
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117 |
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118 |
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119 |
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120 |
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121 |
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122 |
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123 |
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124 |
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125 | function validateIndex(index, length) {
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126 | if (!(0, _is.isNumber)(index) || !(0, _number.isInteger)(index)) {
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127 | throw new TypeError('Index must be an integer (value: ' + index + ')');
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128 | }
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129 |
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130 | if (index < 0 || typeof length === 'number' && index >= length) {
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131 | throw new _IndexError.IndexError(index, length);
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132 | }
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133 | }
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134 |
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135 |
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136 |
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137 |
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138 |
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139 |
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140 |
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141 |
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142 |
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143 |
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144 |
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145 |
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146 | function resize(array, size, defaultValue) {
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147 |
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148 |
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149 | if (!Array.isArray(array) || !Array.isArray(size)) {
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150 | throw new TypeError('Array expected');
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151 | }
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152 |
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153 | if (size.length === 0) {
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154 | throw new Error('Resizing to scalar is not supported');
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155 | }
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156 |
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157 |
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158 | size.forEach(function (value) {
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159 | if (!(0, _is.isNumber)(value) || !(0, _number.isInteger)(value) || value < 0) {
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160 | throw new TypeError('Invalid size, must contain positive integers ' + '(size: ' + (0, _string.format)(size) + ')');
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161 | }
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162 | });
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163 |
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164 | var _defaultValue = defaultValue !== undefined ? defaultValue : 0;
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165 |
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166 | _resize(array, size, 0, _defaultValue);
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167 |
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168 | return array;
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169 | }
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170 |
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171 |
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172 |
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173 |
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174 |
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175 |
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176 |
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177 |
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178 |
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179 |
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180 |
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181 | function _resize(array, size, dim, defaultValue) {
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182 | var i;
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183 | var elem;
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184 | var oldLen = array.length;
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185 | var newLen = size[dim];
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186 | var minLen = Math.min(oldLen, newLen);
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187 |
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188 | array.length = newLen;
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189 |
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190 | if (dim < size.length - 1) {
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191 |
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192 | var dimNext = dim + 1;
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193 |
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194 | for (i = 0; i < minLen; i++) {
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195 |
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196 | elem = array[i];
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197 |
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198 | if (!Array.isArray(elem)) {
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199 | elem = [elem];
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200 |
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201 | array[i] = elem;
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202 | }
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203 |
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204 | _resize(elem, size, dimNext, defaultValue);
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205 | }
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206 |
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207 |
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208 | for (i = minLen; i < newLen; i++) {
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209 |
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210 | elem = [];
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211 | array[i] = elem;
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212 |
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213 | _resize(elem, size, dimNext, defaultValue);
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214 | }
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215 | } else {
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216 |
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217 |
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218 | for (i = 0; i < minLen; i++) {
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219 | while (Array.isArray(array[i])) {
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220 | array[i] = array[i][0];
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221 | }
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222 | }
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223 |
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224 |
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225 | for (i = minLen; i < newLen; i++) {
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226 | array[i] = defaultValue;
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227 | }
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228 | }
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229 | }
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230 |
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231 |
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232 |
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233 |
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234 |
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235 |
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236 |
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237 |
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238 |
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239 |
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240 |
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241 |
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242 | function reshape(array, sizes) {
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243 | var flatArray = flatten(array);
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244 | var currentLength = flatArray.length;
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245 |
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246 | if (!Array.isArray(array) || !Array.isArray(sizes)) {
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247 | throw new TypeError('Array expected');
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248 | }
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249 |
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250 | if (sizes.length === 0) {
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251 | throw new _DimensionError.DimensionError(0, currentLength, '!=');
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252 | }
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253 |
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254 | sizes = processSizesWildcard(sizes, currentLength);
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255 | var newLength = product(sizes);
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256 |
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257 | if (currentLength !== newLength) {
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258 | throw new _DimensionError.DimensionError(newLength, currentLength, '!=');
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259 | }
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260 |
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261 | try {
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262 | return _reshape(flatArray, sizes);
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263 | } catch (e) {
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264 | if (e instanceof _DimensionError.DimensionError) {
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265 | throw new _DimensionError.DimensionError(newLength, currentLength, '!=');
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266 | }
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267 |
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268 | throw e;
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269 | }
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270 | }
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271 |
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272 |
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273 |
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274 |
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275 |
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276 |
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277 |
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278 |
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279 |
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280 | function processSizesWildcard(sizes, currentLength) {
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281 | var newLength = product(sizes);
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282 | var processedSizes = sizes.slice();
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283 | var WILDCARD = -1;
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284 | var wildCardIndex = sizes.indexOf(WILDCARD);
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285 | var isMoreThanOneWildcard = sizes.indexOf(WILDCARD, wildCardIndex + 1) >= 0;
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286 |
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287 | if (isMoreThanOneWildcard) {
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288 | throw new Error('More than one wildcard in sizes');
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289 | }
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290 |
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291 | var hasWildcard = wildCardIndex >= 0;
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292 | var canReplaceWildcard = currentLength % newLength === 0;
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293 |
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294 | if (hasWildcard) {
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295 | if (canReplaceWildcard) {
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296 | processedSizes[wildCardIndex] = -currentLength / newLength;
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297 | } else {
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298 | throw new Error('Could not replace wildcard, since ' + currentLength + ' is no multiple of ' + -newLength);
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299 | }
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300 | }
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301 |
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302 | return processedSizes;
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303 | }
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304 |
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305 |
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306 |
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307 |
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308 |
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309 |
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310 |
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311 | function product(array) {
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312 | return array.reduce(function (prev, curr) {
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313 | return prev * curr;
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314 | }, 1);
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315 | }
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316 |
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317 |
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318 |
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319 |
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320 |
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321 |
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322 |
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323 |
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324 |
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325 | function _reshape(array, sizes) {
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326 |
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327 | var tmpArray = array;
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328 | var tmpArray2;
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329 |
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330 | for (var sizeIndex = sizes.length - 1; sizeIndex > 0; sizeIndex--) {
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331 | var size = sizes[sizeIndex];
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332 | tmpArray2 = [];
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333 |
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334 | var length = tmpArray.length / size;
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335 |
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336 | for (var i = 0; i < length; i++) {
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337 | tmpArray2.push(tmpArray.slice(i * size, (i + 1) * size));
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338 | }
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339 |
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340 |
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341 | tmpArray = tmpArray2;
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342 | }
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343 |
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344 | return tmpArray;
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345 | }
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346 |
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347 |
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348 |
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349 |
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350 |
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351 |
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352 |
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353 |
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354 | function squeeze(array, size) {
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355 | var s = size || arraySize(array);
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356 |
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357 | while (Array.isArray(array) && array.length === 1) {
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358 | array = array[0];
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359 | s.shift();
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360 | }
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361 |
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362 |
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363 | var dims = s.length;
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364 |
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365 | while (s[dims - 1] === 1) {
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366 | dims--;
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367 | }
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368 |
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369 |
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370 | if (dims < s.length) {
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371 | array = _squeeze(array, dims, 0);
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372 | s.length = dims;
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373 | }
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374 |
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375 | return array;
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376 | }
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377 |
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378 |
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379 |
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380 |
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381 |
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382 |
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383 |
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384 |
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385 |
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386 |
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387 | function _squeeze(array, dims, dim) {
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388 | var i, ii;
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389 |
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390 | if (dim < dims) {
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391 | var next = dim + 1;
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392 |
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393 | for (i = 0, ii = array.length; i < ii; i++) {
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394 | array[i] = _squeeze(array[i], dims, next);
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395 | }
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396 | } else {
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397 | while (Array.isArray(array)) {
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398 | array = array[0];
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399 | }
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400 | }
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401 |
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402 | return array;
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403 | }
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404 |
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405 |
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406 |
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407 |
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408 |
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409 |
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410 |
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411 |
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412 |
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413 |
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414 |
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415 |
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416 |
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417 |
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418 | function unsqueeze(array, dims, outer, size) {
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419 | var s = size || arraySize(array);
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420 |
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421 | if (outer) {
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422 | for (var i = 0; i < outer; i++) {
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423 | array = [array];
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424 | s.unshift(1);
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425 | }
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426 | }
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427 |
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428 |
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429 | array = _unsqueeze(array, dims, 0);
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430 |
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431 | while (s.length < dims) {
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432 | s.push(1);
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433 | }
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434 |
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435 | return array;
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436 | }
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437 |
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438 |
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439 |
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440 |
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441 |
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442 |
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443 |
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444 |
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445 |
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446 |
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447 | function _unsqueeze(array, dims, dim) {
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448 | var i, ii;
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449 |
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450 | if (Array.isArray(array)) {
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451 | var next = dim + 1;
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452 |
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453 | for (i = 0, ii = array.length; i < ii; i++) {
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454 | array[i] = _unsqueeze(array[i], dims, next);
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455 | }
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456 | } else {
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457 | for (var d = dim; d < dims; d++) {
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458 | array = [array];
|
459 | }
|
460 | }
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461 |
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462 | return array;
|
463 | }
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464 |
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465 |
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466 |
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467 |
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468 |
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469 |
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470 |
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471 |
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472 | function flatten(array) {
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473 | if (!Array.isArray(array)) {
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474 |
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475 | return array;
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476 | }
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477 |
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478 | var flat = [];
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479 | array.forEach(function callback(value) {
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480 | if (Array.isArray(value)) {
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481 | value.forEach(callback);
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482 | } else {
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483 | flat.push(value);
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484 | }
|
485 | });
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486 | return flat;
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487 | }
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488 |
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489 |
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490 |
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491 |
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492 |
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493 |
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494 |
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495 | function map(array, callback) {
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496 | return Array.prototype.map.call(array, callback);
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497 | }
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498 |
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499 |
|
500 |
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501 |
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502 |
|
503 |
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504 |
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505 | function forEach(array, callback) {
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506 | Array.prototype.forEach.call(array, callback);
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507 | }
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508 |
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509 |
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510 |
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511 |
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512 |
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513 |
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514 |
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515 | function filter(array, callback) {
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516 | if (arraySize(array).length !== 1) {
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517 | throw new Error('Only one dimensional matrices supported');
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518 | }
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519 |
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520 | return Array.prototype.filter.call(array, callback);
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521 | }
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522 |
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523 |
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524 |
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525 |
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526 |
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527 |
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528 |
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529 |
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530 |
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531 | function filterRegExp(array, regexp) {
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532 | if (arraySize(array).length !== 1) {
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533 | throw new Error('Only one dimensional matrices supported');
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534 | }
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535 |
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536 | return Array.prototype.filter.call(array, function (entry) {
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537 | return regexp.test(entry);
|
538 | });
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539 | }
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540 |
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541 |
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542 |
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543 |
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544 |
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545 |
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546 |
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547 | function join(array, separator) {
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548 | return Array.prototype.join.call(array, separator);
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549 | }
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550 |
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551 |
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552 |
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553 |
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554 |
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555 |
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556 |
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557 | function identify(a) {
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558 | if (!Array.isArray(a)) {
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559 | throw new TypeError('Array input expected');
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560 | }
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561 |
|
562 | if (a.length === 0) {
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563 | return a;
|
564 | }
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565 |
|
566 | var b = [];
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567 | var count = 0;
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568 | b[0] = {
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569 | value: a[0],
|
570 | identifier: 0
|
571 | };
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572 |
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573 | for (var i = 1; i < a.length; i++) {
|
574 | if (a[i] === a[i - 1]) {
|
575 | count++;
|
576 | } else {
|
577 | count = 0;
|
578 | }
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579 |
|
580 | b.push({
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581 | value: a[i],
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582 | identifier: count
|
583 | });
|
584 | }
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585 |
|
586 | return b;
|
587 | }
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588 |
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589 |
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590 |
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591 |
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592 |
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593 |
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594 |
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595 | function generalize(a) {
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596 | if (!Array.isArray(a)) {
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597 | throw new TypeError('Array input expected');
|
598 | }
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599 |
|
600 | if (a.length === 0) {
|
601 | return a;
|
602 | }
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603 |
|
604 | var b = [];
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605 |
|
606 | for (var i = 0; i < a.length; i++) {
|
607 | b.push(a[i].value);
|
608 | }
|
609 |
|
610 | return b;
|
611 | }
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612 |
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613 |
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614 |
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615 |
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616 |
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617 |
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618 |
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619 |
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620 |
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621 |
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622 |
|
623 | function getArrayDataType(array, typeOf) {
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624 | var type;
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625 |
|
626 | var length = 0;
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627 |
|
628 | for (var i = 0; i < array.length; i++) {
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629 | var item = array[i];
|
630 | var isArray = Array.isArray(item);
|
631 |
|
632 | if (i === 0 && isArray) {
|
633 | length = item.length;
|
634 | }
|
635 |
|
636 |
|
637 | if (isArray && item.length !== length) {
|
638 | return undefined;
|
639 | }
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640 |
|
641 | var itemType = isArray ? getArrayDataType(item, typeOf)
|
642 | : typeOf(item);
|
643 |
|
644 | if (type === undefined) {
|
645 | type = itemType;
|
646 | } else if (type !== itemType) {
|
647 | return 'mixed';
|
648 | } else {
|
649 | }
|
650 | }
|
651 |
|
652 | return type;
|
653 | }
|
654 |
|
655 |
|
656 |
|
657 |
|
658 |
|
659 |
|
660 |
|
661 | function last(array) {
|
662 | return array[array.length - 1];
|
663 | }
|
664 |
|
665 |
|
666 |
|
667 |
|
668 |
|
669 | function initial(array) {
|
670 | return array.slice(0, array.length - 1);
|
671 | }
|
672 |
|
673 |
|
674 |
|
675 |
|
676 |
|
677 |
|
678 |
|
679 |
|
680 | function contains(array, item) {
|
681 | return array.indexOf(item) !== -1;
|
682 | } |
\ | No newline at end of file |