Generated by SassMeister.com.

SassMeister-input.scss

// ----
// libsass (v3.3.2)
// ----


// http://csswizardry.com/2014/07/hacks-for-dealing-with-specificity/

@mixin stronger($selector, $factor: 1) {

  $total: $selector;

  @if $factor > 0 {
    @for $i from 1 through $factor {
      $total: $total + $selector; 
    }
    #{$total} {
      @content
    }
  } else {
    @warn "Invalid factor value";
  }

}


// DEMO
@include stronger('.class') {
  test: test;
}

@include stronger('.class--one', 2) {
  test: test;
}

@include stronger('.class--two', 5) {
  test: test;
}

@include stronger('.class--three', -5) {
  test: test;
}

SassMeister-output.css

.class.class {
  test: test;
}

.class--one.class--one.class--one {
  test: test;
}

.class--two.class--two.class--two.class--two.class--two.class--two {
  test: test;
}