// Checks whether $list is symmetrical (one-level deep)
// -------------------------------------------------------------------------------
// @documentation http://sassylists.com/documentation/#is-symmetrical
// -------------------------------------------------------------------------------
// @alias `unfold()`
// -------------------------------------------------------------------------------
// @dependence `reverse()`
// -------------------------------------------------------------------------------
// @example is-symmetrical(a b c d e)   => false
// @example is-symmetrical(a b c b a)   => true
// @example is-symmetrical(a (b c d) a) => true
// -------------------------------------------------------------------------------
// @param $list [List] : list
// -------------------------------------------------------------------------------
// @return [Boolean]

@function is-symmetrical($list) {
    $reverse: reverse($list);
    @return $reverse == reverse($reverse);  
}

// Alias
@function is-mirror($list) {
    @return is-symmetrical($list);
}