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Re^2: When should you not use strict and warnings?

by Athanasius (Canon)
on Dec 28, 2012 at 16:15 UTC ( #1010717=note: print w/ replies, xml ) Need Help??


in reply to Re: When should you not use strict and warnings?
in thread When should you not use strict and warnings?

Well, adding -Mstrict and qualifying every variable with my may be a little much for a one-liner. But adding a single -w? Consider:

2:05 >type nums.txt 1 2 3 4 2:05 >perl -nE "$sum += $_; END { say $sum }" nums.txt 10 2:06 >perl -nwE "$sum += $_; END { say $sum }" nums.txt 10 2:06 >perl -nE "$sum += $_; END { say $sun }" nums.txt 2:06 >perl -nwE "$sum += $_; END { say $sun }" nums.txt Name "main::sum" used only once: possible typo at -e line 1. Name "main::sun" used only once: possible typo at -e line 1. Use of uninitialized value $sun in say at -e line 1, <> line 4. 2:06 >

That’s a lot of potential help for the cost of just one extra character on the command line. :-)

Athanasius <°(((><contra mundum Iustus alius egestas vitae, eros Piratica,

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