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Packages: default System System.Caching System.Collections System.Data System.Data.ActiveRecord System.Data.ActiveRecord.Relations System.Data.ActiveRecord.Scaffold System.Data.ActiveReecord.Scaffold.InputBuilder System.Data.Commom.Sqlite System.Data.Common System.Data.Common.Mssql System.Data.Common.Mysql System.Data.Common.Oracle System.Data.Common.Pgsql System.Data.Common.Sqlite System.Data.DataGateway System.Data.SqlMap System.Data.SqlMap.Configuration System.Data.SqlMap.Statements System.Exceptions System.I18N System.IO System.Security System.Util System.Web System.Web.Services System.Web.UI System.Web.UI.ActiveControls System.Web.UI.WebControls System.Web.UI.WebControls.assets System.Xml Classes: TAttributeCollection TDummyDataSource TDummyDataSourceIterator TList TListIterator TMap TMapIterator TPagedDataSource TPagedList TPagedListFetchDataEventParameter TPagedListIterator TPagedListPageChangedEventParameter TPagedMapIterator TQueue TQueueIterator TStack TStackIterator |
Keyword
# Class TStack
    TComponent
       |
       --TStack
TStack class TStack implements a stack. The typical stack operations are implemented, which include push(), pop() and peek(). In addition, contains() can be used to check if an item is contained in the stack. To obtain the number of the items in the stack, check the Count property. Items in the stack may be traversed using foreach as follows,

     foreach($stack as $item) ...
Since: 3.0 Author: Qiang Xue <qiang.xue@gmail.com>
Constructor Summary
public | __construct Array Constructor.
Method Summary
void | clear () Removes all items in the stack.
boolean | contains ( mixed $item)
void | copyFrom ( mixed $data) Copies iterable data into the stack.
integer | count () Returns the number of items in the stack.
integer | getCount ()
Iterator | getIterator () Returns an iterator for traversing the items in the stack.
mixed | peek () Returns the item at the top of the stack.
mixed | pop () Pops up the item at the top of the stack.
void | push ( mixed $item) Pushes an item into the stack.
array | toArray ()
Methods Inherited From TComponent
TComponent::addParsedObject(), TComponent::attachEventHandler(), TComponent::canGetProperty(), TComponent::canSetProperty(), TComponent::createdOnTemplate(), TComponent::detachEventHandler(), TComponent::evaluateExpression(), TComponent::evaluateStatements(), TComponent::getEventHandlers(), TComponent::getSubProperty(), TComponent::hasEvent(), TComponent::hasEventHandler(), TComponent::hasProperty(), TComponent::raiseEvent(), TComponent::setSubProperty(), TComponent::__get(), TComponent::__set()
Constructor Details
## __construct
public __construct | Array
Constructor. Initializes the stack with an array or an iterable object. Throws: TInvalidDataTypeException If data is not null and neither an array nor an iterator.
Method Details
## clear
public void clear | ()
Removes all items in the stack.
Output
Exception
## contains
public boolean contains | (mixed $item )
Input
mixed | $item | the item
Output
boolean | whether the stack contains the item
Exception
## copyFrom
public void copyFrom | (mixed $data )
Copies iterable data into the stack. Note, existing data in the list will be cleared first.
Input
mixed | $data | the data to be copied from, must be an array or object implementing Traversable
Output
Exception
throws | TInvalidDataTypeException If data is neither an array nor a Traversable.
## count
public integer count | ()
Returns the number of items in the stack. This method is required by Countable interface.
Output
integer | number of items in the stack.
Exception
## getCount
public integer getCount | ()
Output
integer | the number of items in the stack
Exception
## getIterator
public Iterator getIterator | ()
Returns an iterator for traversing the items in the stack. This method is required by the interface IteratorAggregate.
Output
Iterator | an iterator for traversing the items in the stack.
Exception
## peek
public mixed peek | ()
Returns the item at the top of the stack. Unlike pop(), this method does not remove the item from the stack.
Output
mixed | item at the top of the stack
Exception
throws | TInvalidOperationException if the stack is empty
## pop
public mixed pop | ()
Pops up the item at the top of the stack.
Output
mixed | the item at the top of the stack
Exception
throws | TInvalidOperationException if the stack is empty
## push
public void push | (mixed $item )
Pushes an item into the stack.
Input
mixed | $item | the item to be pushed into the stack
Output
Exception
## toArray
public array toArray | ()
Output
array | the list of items in stack
Exception