same sub used in multiple programs

[mountainbiker]

if i have a subroutines used in multiple programs, what is the best way to include these into programs (rather than maintain multiple copies of the same subroutines)?

 

[tvfahlberg]

Put it into a package (separate file with .pm suffix).
Then "use" the package wherever you need it.

-- foo.pm
package foo;
sub doSomething {
print "Hello";
}

-- elsewhere --
use foo;
foo->doSomething;

-- see PerlToot for more info on packaging and objects

 

[goBoating]

I also tend toward the object oriented treatment, but
this also works in simple situations.

If you have your sub in a file named require_this.pl
and it looked like this,

#!/usr/local/bin/perl
sub doSomething {
print "Ran doSomething\n";
return(1);
}
1;

you could 'require' it in other programs like this,

#!/usr/local/bin/perl
require './require_this.pl';
unless (&doSomething) { die "Failed require\n"; }

'hope this helps

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