Foreach iterate over elements in a collection

Tcl Commands for Advanced Scripting

foreach (iterate over elements in a collection)

The collection foreach command iterates over each object in a collection through an iterator variable. The iterator variable specifies the collection to interate over and the set of commands or script to apply at each iteration.

%collection foreach <iterator_variable> <collection_variable> {body}

collection is the name of the Xilinx Tcl command. foreach is the name of the collection subcommand. iterator_variable specifies the name of the iterator variable.

collection_variable specifies the name of the collection to iterate through. body specifies a set of commands or script to execute at each iteration.

Example:	% set colVar [search * -type instance]
	% collection foreach itr $colVar {
	puts [object name $itr]}

Description:	In this example, the set command is used in the first line to assign a
	collection of instances to the colVar collection variable.
	In the second line, the collection foreach command is used to iterate
	over each object in the colVar collection.
	itr is the name of the iterator variable.
	Curly braces { } enclose the body, which is the script that executes at
	each iteration. Note that the object name command is nested in the
	body to return the value of the iterator variable, which is an instance
	in this case.

Tcl Return:	An integer return of the number of times the script was executed.

Caution! You cannot use the standard Tcl-supplied foreach command to iterate over collections. You must use the Xilinx-specific collection foreach command. Using the Tcl-supplied foreach command may cause the collection to be deleted.

get (get collection property)

The collection get command returns the value of the specified collection property. Collection properties and values are assigned with the collection set command.

collection get <property_name>

collection is the name of the Xilinx Tcl command.

get is the name of the collection subcommand.

property_name specifies the name of the property you wish to get the value of. Valid property names for the collection get command are display_line_limit and display_type.

Example:	% collection get display_type

Description:	In this example, the collection get command is used to get the current
	setting of the display_type property.

Tcl Return:

The set value of the specified property.

Development System Reference Guide

www.xilinx.com

8.2i specifications

Xilinx 8.2i is a significant version of the Xilinx ISE (Integrated Software Environment) that emerged in the early 2000s, marking an important milestone in the world of FPGA (Field-Programmable Gate Array) development. This version introduced a slew of advanced features, technologies, and characteristics that made it an indispensable tool for engineers and developers in designing, simulating, and implementing digital circuits.

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Xilinx 8.2i manual Foreach iterate over elements in a collection, Get get collection property

Models: 8.2i

Tcl Commands for Advanced Scripting

foreach (iterate over elements in a collection)

puts [object name $itr]}

get (get collection property)

% collection get display_type

Development System Reference Guide

8.2i specifications