What do you think how the code could be rewritten to avoid these warnings?

Use no warnings 'uninitialized';

in the inner scope where you do the arithmetics.

That tells the reader of your code knows exactly that the undef being interpreted as 0 is intentional. The effect of the "no warnings" is limited to the scope it is in, so there's no harm for the program as a whole.

Perl 6 - links to (nearly) everything that is Perl 6.

In reply to Re: Convert time string to seconds by moritz
in thread Convert time string to seconds by Dirk80

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