Re: Re: Simple Module Tutorial

[tachyon]

in reply to Re: Simple Module Tutorial
in thread Simple Module Tutorial

Thanks John I've updated the text a bit in line with your suggestions. Forgot the strict in the module! Oops it is back in its rightful place right at the top. I just used the simple $VERSION numbering because this is a simple tute :-) Here is an excerpt from the Exporter manpage for those interested.

Module Version Checking

The Exporter module will convert an attempt to import a number from 
a module into a call to $module_name->require_version($value). This 
can be used to validate that the version of the module being used 
is greater than or equal to the required version.

The Exporter module supplies a default require_version method which 
checks the value of $VERSION in the exporting module.

Since the default require_version method treats the $VERSION number 
as a simple numeric value it will regard version 1.10 as lower than 
1.9. For this reason it is strongly recommended that you use 
numbers with at least two decimal places, e.g., 1.09.

cheers

tachyon

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[John M. Dlugosz]

Yea, I just posted a tutorial on VERSION.

For compatibility with mixing decimals and v-strings, the built-in UNIVERSAL::require_version uses three decimal digits per part.

If you have $MyModule::VERSION= 1.12; (a decimal number) and do a use MyModule 1.20.1 qw/bar/, it will tell you that the module 1.120 and you asked for 1.020, so that's OK. You expected 1.20 to be greater than 1.12, not-OK.

—John