// generates:
// .dig-key-width-1  { @include dig-keywidth(1); }
// .dig-key-height-1  { @include dig-keyheight(1); }
// for 10 classes
@mixin dig-generate($num) {
  @for $i from 1 to $num {
    .dig-key-height-#{$i} {
      height: ($i * $desktop-keyline-increment);
    }

    .dig-key-width-#{$i} {
      width: ($i * $desktop-keyline-increment);
    }
  }
}

@include dig-generate(10);