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Re^3: Generate a unique ID

by zwon (Abbot)
on Nov 16, 2010 at 00:44 UTC ( #871613=note: print w/replies, xml ) Need Help??

in reply to Re^2: Generate a unique ID
in thread Generate a unique ID

So far it looks for me like you trying to reinvent the wheel. You need to create directory with unique name?

$dir = File::Temp->newdir;

That's it. If you want, you can specify template for the directory name which will include timestamp or whatever you want. If it return failure, it's for some other reason.

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Re^4: Generate a unique ID
by BrowserUk (Pope) on Nov 16, 2010 at 06:51 UTC

    I started out looking to create unique filenames, that during a later stage of the processing, I could differentiate from those created by other runs of the code, via globbing, .

    Once sundialsvc4 suggested using a directory--which hadn't crossed my mind earlier--using a temporary directory and creating all my files within it make perfect sense.

    I'm not sure that module buy me anything useful over something like:

    my $path = $ENV{ TMP }; my $dir = 'temp' . join'', map{ ('A'..'Z')[rand 26] } 1 .. 4; ++$dir until mkdir $path . $dir or $! != 17 and die "$path$dir : $!;

    But I guess that depends whether this code will ever make it to another platform. I don't see that ever happening.

    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.

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