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lib/Getopt/Long/Descriptive.pm  view on Meta::CPAN

#pod If this option is present no other options will be returned.  Other
#pod options present will be checked for proper types, but I<not> for
#pod constraints.  This provides a way of specifying C<--help> style options.
#pod
#pod =item Params::Validate
#pod
#pod In addition, any constraint understood by Params::Validate may be used.
#pod
#pod For example, to accept positive integers:
#pod
#pod   [ 'max-iterations=i', "maximum number of iterations",
#pod     { callbacks => { positive => sub { shift() > 0 } } } ],
#pod
#pod (Internally, all constraints are translated into Params::Validate options or
#pod callbacks.)
#pod
#pod =back
#pod
#pod =head3 %arg
#pod
#pod The C<%arg> to C<describe_options> is optional.  If the last parameter is a

lib/Getopt/Long/Descriptive.pm  view on Meta::CPAN

If this option is present no other options will be returned.  Other
options present will be checked for proper types, but I<not> for
constraints.  This provides a way of specifying C<--help> style options.

=item Params::Validate

In addition, any constraint understood by Params::Validate may be used.

For example, to accept positive integers:

  [ 'max-iterations=i', "maximum number of iterations",
    { callbacks => { positive => sub { shift() > 0 } } } ],

(Internally, all constraints are translated into Params::Validate options or
callbacks.)

=back

=head3 %arg

The C<%arg> to C<describe_options> is optional.  If the last parameter is a