Revision 18450,
861 bytes
checked in by zacheiss, 21 years ago
(diff) |
This commit was generated by cvs2svn to compensate for changes in r18449,
which included commits to RCS files with non-trunk default branches.
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1 | package if; |
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2 | |
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3 | our $VERSION = '0.01'; |
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4 | |
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5 | sub work { |
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6 | my $method = shift() ? 'import' : 'unimport'; |
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7 | return unless shift; # CONDITION |
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8 | my $p = shift; # PACKAGE |
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9 | eval "require $p" or die; # Adds .pm etc if needed |
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10 | $p->$method(@_) if $p->can($method); |
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11 | } |
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12 | |
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13 | sub import { shift; unshift @_, 1; goto &work } |
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14 | sub unimport { shift; unshift @_, 0; goto &work } |
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15 | |
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16 | 1; |
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17 | __END__ |
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18 | |
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19 | =head1 NAME |
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20 | |
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21 | if - C<use> a Perl module if a condition holds |
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22 | |
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23 | =head1 SYNOPSIS |
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24 | |
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25 | use if CONDITION, MODULE => ARGUMENTS; |
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26 | |
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27 | =head1 DESCRIPTION |
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28 | |
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29 | The construct |
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30 | |
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31 | use if CONDITION, MODULE => ARGUMENTS; |
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32 | |
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33 | has no effect unless C<CONDITION> is true. In this case the effect is |
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34 | the same as of |
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35 | |
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36 | use MODULE ARGUMENTS; |
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37 | |
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38 | =head1 BUGS |
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39 | |
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40 | The current implementation does not allow specification of the |
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41 | required version of the module. |
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42 | |
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43 | =head1 AUTHOR |
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44 | |
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45 | Ilya Zakharevich L<mailto:perl-module-if@ilyaz.org>. |
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46 | |
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47 | =cut |
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48 | |
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