I usually go with:

    my $delta = $desired_length - length $number;
    while ($delta ne 0) {
        $number = '0' . $number;
        --$delta;
    }

[download]
which may not be the most efficient, but I never have to look up sprintf, and neither will anyone who reads the script. This is a consideration for me, since almost nobody else at my shop knows perl, and a lot them don't know sprintf from Unix or C++ either.

In reply to Re: sprintf zero-fill issue by girarde
in thread sprintf zero-fill issue by mlong

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