pdaoust

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

@function square($x) {
    $squared: $x * $x;
    @return $squared;
}

pdaoust

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

p {
    $color: red;
    color: $color;
}
/* #{$color} */

pdaoust

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

$names: Jim Sandy Clem;
@each $name in $names {
    /* Hi, I am #{$name}. */
    $most-recent-name: $name;
}

pdaoust

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

@function f-fold($func, $list, $initial, $args...) {
    $start: 1;
    @if $initial == null {
        // If there's no initial value, use the first in the list.
        $start: 2;

pdaoust

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

@function f-fold($func, $prev, $list, $args...) {
    @each $item in $list {
        $prev: call($func, $prev, $item, $args...);
    }
    @return $prev;

pdaoust

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

@function f-apply($func, $list, $args...) {
    $new-list: ();
    @each $item in $list {
        $new-list: append($new-list, call($func, $item, $args...));
    }

pdaoust

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

@function f-fold($func, $list, $initial, $args...) {
    $start: 1;
    @if $initial == null {
        // If there's no initial value, use the first in the list.
        $start: 2;

pdaoust

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

// Filter items from a list. Each function takes an item (and additional
// arguments) and returns a boolean value indicating whether the item passed the
// filter.
@function f-filter($func, $list, $args...) {
    $new-list: ();

pdaoust

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

// 'map', 'transform', 'select', or 'project' function. Iterate over a list,
// performing a function on each item, and collecting the new items. Each
// function takes an item as a first argument and returns a transformed item.
// You can pass additional arguments to the function too, which is a decent poor
// man's function composition.

pdaoust

// 'map', 'transform', 'select', or 'project' function. Iterate over a list,
// performing a function on each item, and collecting the new items. Each
// function takes an item as a first argument and returns a transformed item.
// You can pass additional arguments to the function too, which is a decent poor
// man's function composition.
// (I didn't call this f-map because the term 'map' is already used in Sass to
// denote a hash or dictionary.)
@function f-apply($func, $list, $args...) {
    $new-list: ();
    @each $item in $list {