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<h1 class="headline">Template::Namespace::Constants</h1>
<h2 class="subhead">Compile time constant folding</h1>
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<pre># 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,
},
},
});</pre>
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<p>
The <code>Template::Namespace::Constants</code> module implements a
namespace handler which is plugged into the
<code>Template::Directive</code> compiler module. This then performs
compile time constant folding of variables in a particular namespace.
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<h2 id="method_new" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">new(\%constants)</h2>
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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.
</p>
<pre>my $handler = Template::Namespace::Constants->new({
pi => 3.14,
e => 2.718,
});</pre>
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<h2 id="method_ident" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">ident(\@ident)</h2>
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<p>
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.
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Andy Wardley <abw@wardley.org> <a
href="http://wardley.org/">http://wardley.org/</a>
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Copyright (C) 1996-2007 Andy Wardley. All Rights Reserved.
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<p>
This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
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<a href="../../../modules/Template/Directive.html">Template::Directive</a>
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