possible to define an array in Sass?

Question

wondering if it is possible to use an array with Sass as I find my self repeating the following sort of thing:

.donkey
  h2
    background-color= !donkey

.giraffe
  h2
    background-color= !giraffe

.iguana
  h2
    background-color= !iguana

Answer 1

No, this isn't possible. The best way to do it is to define a mixin:

+animal-h2(!name, !color)
  .#{name} h2
    background-color= !color

Then you can have one line per style, rather than three:

+animal-h2("donkey", !donkey)
+animal-h2("giraffe", !giraffe)
+animal-h2("iguana", !iguana)

Answer 2

Absolutely.

$animals: "donkey", "giraffe", "iguana"
@foreach $animal in $animals
  .#{$animal}
    h2
      background-color: !#{$animal}

Answer 3

nex3's answer is correct. To get this working with SASS on Rails 3.1 I needed to have the following in a css.scss file:

$donkey: #CC4499;

@mixin animal-h2($name, $color) {
  .#{$name} h2 {
    background-color: $color;
  }
}

@include animal-h2("donkey", $donkey);
@include animal-h2("horse", #000);

Which output:

.donkey h2 {
    background-color: #CC4499;
}

.horse h2 {
    background-color: black;
}