in reply to Help Changing use into require/import

Hello computergeek and welcome to the monastery and to the wonderful world of Perl!

You can also be interested into Module::Load::Conditional

PS also note that the folowing works: 

perl -e " my $rc;  
          BEGIN{                                                      
+              
                $rc = eval{require Capture::Tiny; 
                           Capture::Tiny->import ('capture'); 
                           1;
                }
          } 
          if ($rc){
                   ($SpoolFile->[0],$CMDERR[0],$ReturnCode)=capture{sy
+stem qq[ echo Hello, World | cat ]};
                    print join ', ', $ReturnCode, $SpoolFile->[0];
          } 
          
"

0, Hello, World

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Infact use is equivalent to BEGIN { require Module; Module->import( LIST ); } as per use docs.

PPS see also some other links about compile time / run time

L*

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

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Re^2: Help Changing use into require/import
by stevieb (Canon) on Mar 07, 2018 at 21:54 UTC

    I wrote Plugin::Simple, primarily because I had a bit of time and wanted to write my own basic plugin architecture for a learning exercise. Here's a runtime snip of actually loading a plugin. It can be in the form of a file name with a path, a filename without a path, or a standard Module::IAm syntax. The load() function is brought in from Module::Load.

    The conditional load doesn't affect the program, it simply determines whether the plugin name will be returned to the caller:

    sub _load {
    my ($self, $plugin) = @_;
 
    if ($plugin =~ /(.*)\W(\w+)\.pm/){
        unshift @INC, $1;
        $plugin = $2;
    }
    elsif ($plugin =~ /^(\w+)\.pm$/){
        unshift @INC, '.';
        $plugin = $1;
    }
 
    my $loaded = eval { load $plugin; 1; };
 
    if ($loaded) {
        return $plugin;
    }
}

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