Generated by SassMeister.com.

SassMeister-input.scss

// ----
// libsass (v3.2.5)
// ----

/// Performs right-to-left function composition.
/// The rightmost function may have any arity;
/// the remaining functions must be unary.
///
/// @see http://ramdajs.com/docs/#compose Ramda Compose
///
/// @param {List} $functions - List of functions to run
/// @param {Arglist} $args - List of args to give to last function in $functions
///
@function compose($functions, $args...) {
  $result: call(nth($functions, -1), $args...);
  
  @for $i from length($functions) - 1 through 1 {
    $result: call(nth($functions, $i), $result);
  }
  
  @return $result;
}

@function pow($number, $exp) {
  $value: 1;
  @if $exp > 0 {
    @for $i from 1 through $exp {
      $value: $value * $number;
    }
  } @else if $exp < 0 {
    @for $i from 1 through -$exp {
      $value: $value / $number;
    }
  }
  @return $value;
}

@function negate($value) {
  @return $value * -1;
}

@function inc($value) {
  @return $value + 1;
}

.foo {
  test: compose(inc negate pow, 3, 4);
}

SassMeister-output.css

.foo {
  test: -80;
}