PHP Prado\Collections TStack::peek 예제들

peek() 공개 메소드

Unlike {@link pop()}, this method does not remove the item from the stack.

public peek ( ) : mixed
리턴	mixed	item at the top of the stack

예제 #1

파일: TStackTest.php 프로젝트: pradosoft/prado

 public function testCanNotPeekAnEmptyStack()
 {
     $stack = new TStack();
     try {
         $item = $stack->peek();
     } catch (TInvalidOperationException $e) {
         return;
     }
     self::fail('An expected TInvalidOperationException was not raised');
 }