public function apply(Scope $scope, GenericList $arguments) {
		foreach ($arguments as $pair) {
			list($condition, $body) = $pair;
			if ($condition->evaluate($scope)) return $body->evaluate($scope);
		}
	}
public function apply(Scope $scope, GenericList $arguments) {
		foreach ($arguments as $pair) {
			list($condition, $body) = $pair;
			if ($condition->evaluate($scope)) return $body->evaluate($scope);
		}
	}
Returns a value depending on a condition
Usage: (cond ((is-integer? (%0)) 'Integer') ((is-string? (%0)) 'String') (true 'Unexpected type'))
Returns: mixed
(non-PHPdoc)
@see \eMacros\Applicable::apply()