[%# # IMPORTANT NOTE # This documentation is generated automatically from source # templates. Any changes you make here may be lost. # # The 'docsrc' documentation source bundle is available for download # from http://www.template-toolkit.org/docs.html and contains all # the source templates, XML files, scripts, etc., from which the # documentation for the Template Toolkit is built. -%] [% META book = 'Modules' page = 'Namespace_Constants' %] [% WRAPPER toc; PROCESS tocitem title ="SYNOPSIS" subs = []; PROCESS tocitem title ="DESCRIPTION" subs = []; PROCESS tocitem title ="PUBLIC METHODS" subs = [ "new(\\%constants)", "ident(\\@ident)" ]; PROCESS tocitem title ="AUTHOR" subs = []; PROCESS tocitem title ="VERSION" subs = []; PROCESS tocitem title ="COPYRIGHT" subs = []; PROCESS tocitem title ="SEE ALSO" subs = []; END %] [% WRAPPER section title="SYNOPSIS" -%]

        # easy way to define constants
        use Template;

        my $tt = Template->new({
    	CONSTANTS => {
    	    pi => 3.14,
    	    e  => 2.718,
    	},
        });

        # nitty-gritty, hands-dirty way
        use Template::Namespace::Constants;

        my $tt = Template->new({
    	NAMESPACE => {
    	    constants => Template::Namespace::Constants->new({
    		pi => 3.14,
    	        e  => 2.718,
                },
    	},
        });

[%- END %] [% WRAPPER section title="DESCRIPTION" -%]

The Template::Namespace::Constants module implements a namespace handler which is plugged into the Template::Directive compiler module. This then performs compile time constant folding of variables in a particular namespace.

[%- END %] [% WRAPPER section title="PUBLIC METHODS" -%][% WRAPPER subsection title = "new(\\%constants)" -%]

The new() constructor method creates and returns a reference to a new Template::Namespace::Constants object. This creates an internal stash to store the constant variable definitions passed as arguments.

        my $handler = Template::Namespace::Constants->new({
    	pi => 3.14,
    	e  => 2.718,
        });

[%- END %] [% WRAPPER subsection title = "ident(\\@ident)" -%]

Method called to resolve a variable identifier into a compiled form. In this case, the method fetches the corresponding constant value from its internal stash and returns it.

[%- END %] [%- END %] [% WRAPPER section title="AUTHOR" -%]

Andy Wardley <abw@wardley.org>

[% ttlink('http://wardley.org/', 'http://wardley.org/') -%]

[%- END %] [% WRAPPER section title="VERSION" -%]

1.27, distributed as part of the Template Toolkit version 2.19, released on 27 April 2007.

[%- END %] [% WRAPPER section title="COPYRIGHT" -%]

      Copyright (C) 1996-2007 Andy Wardley.  All Rights Reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

[%- END %] [% WRAPPER section title="SEE ALSO" -%]

[% ttlink('Template::Directive', 'Template::Directive') -%]

[%- END %]