Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.9)
// Compass (v1.0.0.alpha.20)
// ----

@import url('http://roboto-webfont.googlecode.com/svn/trunk/roboto.all.css'); 

$_gdm-type-styles: (
  display4: (
    font-family: "Roboto light",
    font-size: 8em,
    color: rgba(black, .54),
  ),
  display3: (
    font-family: "Roboto regular",
    font-size: 4em,
    color: rgba(black, .54),
  ),
  display2: (
    font-family: "Roboto regular",
    font-size: 3.21428571em,
    color: rgba(black, .54),
  ),
  display1: (
    font-family: "Roboto regular",
    font-size: 2.42857143em,
    color: rgba(black, .54),
  ),
  headline: (
    font-family: "Roboto regular",
    font-size: 1.71428571em,
    color: rgba(black, .87),
  ),
  title: (
    font-family: "Roboto medium",
    font-size: 1.42857143em,
    color: rgba(black, .87),
  ),
  subhead: (
    font-family: "Roboto regular",
    font-size: 1.14285714em,
    color: rgba(black, .87),
  ),
  body2: (
    font-family: "Roboto medium",
    font-size: 1em,
    color: rgba(black, .87),
  ),
  body1: (
    font-family: "Roboto regular",
    font-size: 1em,
    color: rgba(black, .87),
  ),
  body2: (
    font-family: "Roboto regular",
    font-size: 1em,
    color: rgba(black, .87),
  ),
  body2: (
    font-family: "Roboto regular",
    font-size: 1em,
    color: rgba(black, .87),
  ),
  body2: (
    font-family: "Roboto regular",
    font-size: 1em,
    color: rgba(black, .87),
  ),
  body2: (
    font-family: "Roboto regular",
    font-size: 1em,
    color: rgba(black, .87),
  )
);

@mixin gdm-type-style($type) {
  $style: map-get($_gdm-type-styles, $type);
  @each $property, $value in $style {
    #{$property}: $value;
  }
}

// TEST

body {
  @include gdm-type-style(display4);
}

SassMeister-output.css

Duplicate key "body2" in map (display4: (font-family: "Roboto light", font-size: 8em, color: rgba(black, 0.54)), display3: (font-family: "Roboto regular", font-size: 4em, color: rgba(black, 0.54)), display2: (font-family: "Roboto regular", font-size: 3.21429em, color: rgba(black, 0.54)), display1: (font-family: "Roboto regular", font-size: 2.42857em, color: rgba(black, 0.54)), headline: (font-family: "Roboto regular", font-size: 1.71429em, color: rgba(black, 0.87)), title: (font-family: "Roboto medium", font-size: 1.42857em, color: rgba(black, 0.87)), subhead: (font-family: "Roboto regular", font-size: 1.14286em, color: rgba(black, 0.87)), body2: (font-family: "Roboto medium", font-size: 1em, color: rgba(black, 0.87)), body1: (font-family: "Roboto regular", font-size: 1em, color: rgba(black, 0.87)), body2: (font-family: "Roboto regular", font-size: 1em, color: rgba(black, 0.87)), body2: (font-family: "Roboto regular", font-size: 1em, color: rgba(black, 0.87)), body2: (font-family: "Roboto regular", font-size: 1em, color: rgba(black, 0.87)), body2: (font-family: "Roboto regular", font-size: 1em, color: rgba(black, 0.87))).