OpenEdge ABL API Reference

OpenEdge.Core.Collections.Stack

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Table of Contents

OpenEdge.Core.Collections.Stack

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Last Updated: January 15, 2026
2 minute read

OpenEdge
Documentation

Namespace:

OpenEdge.Core.Collections

Type: Class

Stack

Parent Classes:

Progress.Lang.Object

OpenEdge.Core.Collections.Stack

Inherits:

Progress.Lang.Object

	Copyright (c) 2013 by Progress Software Corporation. All rights reserved.
File:	Stack
Purpose:	A stack is a last-in-first-out collection.
Author(s):	pjudge
Created:	Tue Jan 05 15:09:51 EST 2010
Notes:	* Non-char primitive values will have their own IntegerStack() say,that calls PrimitivePush and
	converts to/from character to their native datatype.
	is dynamically constructed, but stacks need to be lightweight at runtime (IMO anyway).

Method Summary

	Options	Name	Purpose
		Progress.Lang.Object Clone ()
		Invert ()
		LOGICAL ObjectContains (Object)
		Progress.Lang.Object ObjectPeek ()
		Progress.Lang.Object ObjectPop ()
		ObjectPush (Object)
		Progress.Lang.Object ObjectToArray ()
		LOGICAL PrimitiveContains (character)
		CHARACTER PrimitivePeek ()
		CHARACTER PrimitivePop ()
		PrimitivePush (character)
		CHARACTER PrimitiveToArray ()
		Rotate (integer)
		SetStackDepth (integer)
		Swap (integer, integer)

Constructor Summary

	Options	Name	Purpose
		Stack ()
		Stack ()
		Stack (character[])
		Stack (integer)
		Stack (Object[])

Property Summary

	Options	Name	Purpose
		LOGICAL AutoExpand
		INTEGER DefaultStackDepth
		INTEGER Depth
		LOGICAL DiscardOnShrink
		INTEGER Size

Method Detail

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Progress.Lang.Object Clone ()

Returns	Progress.Lang.Object

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Invert ()

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LOGICAL ObjectContains (Object)

Parameters:
poItem	Progress.Lang.Object

Returns	LOGICAL

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Progress.Lang.Object ObjectPeek ()

Returns	Progress.Lang.Object

Top

Progress.Lang.Object ObjectPop ()

Returns	Progress.Lang.Object

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ObjectPush (Object)

Parameters:
poValue	Progress.Lang.Object

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Progress.Lang.Object ObjectToArray ()

Returns	Progress.Lang.Object

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LOGICAL PrimitiveContains (character)

Parameters:
pcItem	CHARACTER

Returns	LOGICAL

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CHARACTER PrimitivePeek ()

Returns	CHARACTER

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CHARACTER PrimitivePop ()

Returns	CHARACTER

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PrimitivePush (character)

Parameters:
pcValue	CHARACTER

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CHARACTER PrimitiveToArray ()

Returns	CHARACTER

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Rotate (integer)

Parameters:
piItems	INTEGER

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SetStackDepth (integer)

Parameters:
piDepth	INTEGER

Top

Swap (integer, integer)

Parameters:
piFromPos	INTEGER

piToPos	INTEGER

Constructor Detail

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STATIC Stack ()

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Stack ()

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Stack (character[])

Parameters:
pcArray	CHARACTER

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Stack (integer)

Parameters:
piDepth	INTEGER

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Stack (Object[])

Parameters:
poArray	Progress.Lang.Object

Property Detail

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LOGICAL AutoExpand

Returns	LOGICAL

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INTEGER DefaultStackDepth

Returns	INTEGER

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INTEGER Depth

Returns	INTEGER

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LOGICAL DiscardOnShrink

Returns	LOGICAL

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INTEGER Size

Returns	INTEGER