A Sass log helper.

SassMeister-input.scss

// ----
// Sass (v3.3.4)
// Compass (v1.0.0.alpha.18)
// ----

//
// A Sass log helper.
//
@mixin log($args...) {
  @at-root log {
    @each $key, $value in keywords($args) {
      #{$key}: inspect($value)
    }
  }
}

.test {
  @include log(
    $size: 50px, 
    $err: "A useful error message", 
    $bool: false, 
    $val: null,
    $list: (),
    $map: (one: 1, two: 2)
  );
}

SassMeister-output.css

log {
  size: 50px;
  err: "A useful error message";
  bool: false;
  val: null;
  list: ();
  map: (one: 1, two: 2);
}