SASS / SCSS对象键值循环\[重复\]

看一下这个例子：

@include font-face('Entypo', font-files('entypo.woff'));

.icon {
  display: inline;
  font: 400 40px/40px Entypo;
}

.icon-star {
  @extend .icon;

  &:after {
    content: "\2605";
  }
}

.icon-lightning {
  @extend .icon;

  &:after {
    content: "\26A1";
  }
}

我想使事情变得尽可能干燥，所以我想知道以下情况是否可行，以及如何做到？

@include font-face('Entypo', font-files('entypo.woff'));

.icon {
  display: inline;
  font: 400 40px/40px Entypo;
}

$icons {
  $star: "\2605";
  $lightning: "\26A1";
}

@each $icon in $icons {
  $key = $icon{key}; // ???
  $value = $icon{value}; // ???

  .icon-#{$key} {
    @extend .icon;

    &:after {
      content: $value;
    }
  }
}

$icons: star "\2605", lightning "\26A1"; @each $icon in $icons { $key: nth($icon, 1); $value: nth($icon, 2); .icon-#{$key} { @extend .icon; &:after { content: $value; } } }