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Perl in a Nutshell

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Standard Modules
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Trequire

$terminal->Trequire(caps)

Checks to see whether the named capabilities, caps, are defined in the terminal's termcap entry. For example:

$terminal->Trequire(qw/ce ku kd/);
Any undefined capabilities are listed and Carp::croak is called.


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Reference: TputsBook Index8.138 Term::Cap