A Sass list and loop to output icons derived from an icon font. Based on hint from https://github.com/sass/sass/issues/659#issuecomment-71759457

icons.scss

// list of icons
$icons : (
  twitter: e603,
  facebook: e602,
  retweet: e001,
  reply-mail: e002,
  favorite: e003,
  instagram: e600,
  pintrest: e601,
  youtube: e605,
  youtube-2: e604,
  tumblr: e606,
  tumblr-square: e607,
  checkmark: e005,
  share: e006
);

// be sure to update 'icon-class-' to be whatever your project requires
@each $icon, $value in $icons {
  .icon-class-#{$icon}:before {
    content: #{"\"\\"}#{$value + "\""};
  }
}