Supporting SASS functions

[c9s]

http://sass-lang.com/documentation/Sass/Script/Functions.html

• [ ] SASS Built-in Functions
  • [ ] RGB functions
    • [ ] rgb($red, $green, $blue)
    • [ ] rgba($red, $green, $blue, $alpha)
    • [ ] red($color)
    • [ ] green($color)
    • [ ] blue($color)
    • [ ] mix($color1, $color2, [$weight])
  • [ ] HSL Functions
    • [ ] hsl($hue, $saturation, $lightness)
    • [ ] hsla($hue, $saturation, $lightness, $alpha)
    • [ ] hue($color)
    • [ ] saturation($color)
    • [ ] lightness($color)
    • [ ] adjust-hue($color, $degrees)
    • [ ] lighten($color, $amount)
    • [ ] darken($color, $amount)
    • [ ] saturate($color, $amount)
    • [ ] desaturate($color, $amount)
    • [ ] grayscale($color)
    • [ ] complement($color)
    • [ ] invert($color)
  • [ ] Opacity Functions
    • [ ] alpha($color) / opacity($color)
    • [ ] rgba($color, $alpha)
    • [ ] opacify($color, $amount) / fade-in($color, $amount)
    • [ ] transparentize($color, $amount) / fade-out($color, $amount)
  • [ ] Other Color Functions
    • [ ] adjust-color($color, [$red], [$green], [$blue], [$hue], [$saturation], [$lightness], [$alpha])
    • [ ] scale-color($color, [$red], [$green], [$blue], [$saturation], [$lightness], [$alpha])
    • [ ] change-color($color, [$red], [$green], [$blue], [$hue], [$saturation], [$lightness], [$alpha])
    • [ ] ie-hex-str($color)
  • [ ] String Functions
    • [ ] unquote($string)
    • [ ] quote($string)
    • [ ] str-length($string)
    • [ ] str-insert($string, $insert, $index)
    • [ ] str-index($string, $substring)
    • [ ] str-slice($string, $start-at, [$end-at])
    • [ ] to-upper-case($string)
    • [ ] to-lower-case($string)
  • [ ] Number Functions
    • [ ] percentage($number)
    • [ ] round($number)
    • [ ] ceil($number)
    • [ ] floor($number)
    • [ ] abs($number)
    • [ ] min($numbers…)
    • [ ] max($numbers…)
    • [ ] random([$limit])
  • [ ] List Functions
    • [ ] length($list)
    • [ ] nth($list, $n)
    • [ ] set-nth($list, $n, $value)
    • [ ] join($list1, $list2, [$separator])
    • [ ] append($list1, $val, [$separator])
    • [ ] zip($lists…)
    • [ ] index($list, $value)
    • [ ] list-separator(#list)
  • [ ] Map Functions
    • [ ] map-get($map, $key)
    • [ ] map-merge($map1, $map2)
    • [ ] map-remove($map, $keys…)
    • [ ] map-keys($map)
    • [ ] map-values($map)
    • [ ] map-has-key($map, $key)
    • [ ] keywords($args)
  • [ ] Selector Functions
    • .... to be expanded ...