Re^3: Use module only if it is in use

Is it safe to asume that double colons in module names get always translated into slashes ("::" -> "/") instead of backslashes or whatever is used by the OS for subdirs?

No, it's not safe to assume that. And be lucky. Your code wouldn't work if Perl changed the '::' to a '/', because that it would try to divide M by hello("again"), which most likely results in an error.

Perl maps '::' to the appropriate directory separator when it's used as a bareword argument to use and require. But that isn't always.

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Re^4: Use module only if it is in use by bart (Canon) on Sep 02, 2009 at 18:32 UTC
Is it safe to asume that double colons in module names get always translated into slashes ("::" -> "/") instead of backslashes or whatever is used by the OS for subdirs? No, it's not safe to assume that. IMO it is safe to assume that for checking `%INC`. It always worked on MacPerl, on the pre OSX Macintosh, where the system's path separator is a ":". It most definitely is safe on Windows perls, too. If there are exceptions, I haven't heard of them, yet.	[reply] [d/l]
Re^5: Use module only if it is in use by ikegami (Patriarch) on Sep 02, 2009 at 19:29 UTC
VMS would be the other non-unix system, and it uses "/" as well, as far as I can remember. Core modules such as if rely on "/" being the separator.	[reply]
Re^4: Use module only if it is in use by ikegami (Patriarch) on Sep 02, 2009 at 16:08 UTC
He was asking if the keys of `%INC` use `/` instead of `::` across all systems, and the answer is yes.	[reply] [d/l] [select]
Re^4: Use module only if it is in use by vitoco (Hermit) on Sep 02, 2009 at 16:08 UTC
I meant as a key for `%INC`, not as barewords: `$text = Text::Unidecode::unidecode($text) if $INC{"Text/Unidecode.pm"};` [download]	[reply] [d/l] [select]