_identity.scss

@import 'head';

/// A function that does nothing but return the parameter supplied to it. Good
/// as a default or placeholder function.
///
/// @group function
/// @return {bool} true
///
/// @example scss - indentity
///
///   $is-one: identity(1);
///   @debug $is-one; //=> 1

@function identity($args...) {
    @return head($args);
}