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RedHat 9 (Linux i386) - man page for stack (redhat section n)

stack(n)			       Tcl Data Structures				 stack(n)

NAME
       stack - Create and manipulate stack objects

SYNOPSIS
       package require Tcl 8.2

       package require struct ?1.2.1?

       stackName option ?arg arg ...?

       stackName clear

       stackName destroy

       stackName peek ?count?

       stackName pop ?count?

       stackName push item ?item ...?

       stackName size

DESCRIPTION
       The  ::struct::stack command creates a new stack object with an associated global Tcl com-
       mand whose name is stackName.  This command may be used to invoke  various  operations  on
       the stack.  It has the following general form:

       stackName option ?arg arg ...?
	      Option  and  the	args  determine the exact behavior of the command.  The following
	      commands are possible for stack objects:

       stackName clear
	      Remove all items from the stack.

       stackName destroy
	      Destroy the stack, including its storage space and associated command.

       stackName peek ?count?
	      Return the top count items of the stack, without removing them from the stack.   If
	      count  is  not  specified, it defaults to 1.  If count is 1, the result is a simple
	      string; otherwise, it is a list.	If specified, count must be greater than or equal
	      to  1.   If  there  are no items on the stack, this command will return count empty
	      strings.

       stackName pop ?count?
	      Return the top count items of the stack, and remove them from the stack.	If  count
	      is  not specified, it defaults to 1.  If count is 1, the result is a simple string;
	      otherwise, it is a list.	If specified, count must be greater than or equal  to  1.
	      If there are no items on the stack, this command will return count empty strings.

       stackName push item ?item ...?
	      Push  the  item or items specified onto the stack.  If more than one item is given,
	      they will be pushed in the order they are listed.

       stackName size
	      Return the number of items on the stack.

KEYWORDS
       queue, matrix, tree, graph

struct					      1.2.1					 stack(n)


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