Re: Run-time equivalent of "use Module VERSION"?

in reply to Run-time equivalent of "use Module VERSION"?

VERSION is magic and always there for you:

> perl -wle "package VersionTest; use vars qw($VERSION); $VERSION=666;
+ package main; print VersionTest->VERSION(666); print VersionTest->VE
+RSION(667);"
666
VersionTest verion 667 required--this is only version 666 at -e line 1
+.
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Re^2: Run-time equivalent of "use Module VERSION"? by LanX (Saint) on Jul 04, 2014 at 13:07 UTC
> VERSION is magic and always there for you: elaborating a bit from perlobj#VERSION($need) :) UNIVERSAL::VERSION() is like `->can()` a "universal"š method and ... This method is called automatically by the "VERSION" form of "use". `use A 1.2 qw(some imported subs); # implies: A->VERSION(1.2);` [download] Cheers Rolf (addicted to the Perl Programming Language) š) All classes automatically inherit from the UNIVERSAL class, which is built-in to the Perl core.	[reply] [d/l] [select]

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Re^2: Run-time equivalent of "use Module VERSION"?
by LanX (Saint) on Jul 04, 2014 at 13:07 UTC

> VERSION is magic and always there for you:

elaborating a bit from perlobj#VERSION($need) :)

UNIVERSAL::VERSION() is like ->can() a "universal"š method and ...

This method is called automatically by the "VERSION" form of "use".
use A 1.2 qw(some imported subs); # implies: A->VERSION(1.2);
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Cheers Rolf

(addicted to the Perl Programming Language)

š) All classes automatically inherit from the UNIVERSAL class, which is built-in to the Perl core.

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