ramda/src/startsWith.js

var _curry2 =
/*#__PURE__*/
require("./internal/_curry2");

var equals =
/*#__PURE__*/
require("./equals");

var take =
/*#__PURE__*/
require("./take");
/**
 * Checks if a list starts with the provided sublist.
 *
 * Similarly, checks if a string starts with the provided substring.
 *
 * @func
 * @memberOf R
 * @since v0.24.0
 * @category List
 * @sig [a] -> [a] -> Boolean
 * @sig String -> String -> Boolean
 * @param {*} prefix
 * @param {*} list
 * @return {Boolean}
 * @see R.endsWith
 * @example
 *
 *      R.startsWith('a', 'abc')                //=> true
 *      R.startsWith('b', 'abc')                //=> false
 *      R.startsWith(['a'], ['a', 'b', 'c'])    //=> true
 *      R.startsWith(['b'], ['a', 'b', 'c'])    //=> false
 */


var startsWith =
/*#__PURE__*/
_curry2(function (prefix, list) {
  return equals(take(prefix.length, list), prefix);
});

module.exports = startsWith;