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Re^5: Print contents of text file line by line

by hippo (Bishop)
on Jun 25, 2018 at 14:37 UTC ( #1217362=note: print w/replies, xml ) Need Help??


in reply to Re^4: Print contents of text file line by line
in thread Print contents of text file line by line

if the 7th element of the array does exist?

You have to be pedantic if you are to be a programmer. The 7th element will always exist unless the array has fewer than 7 elements. But it might be undef or empty or whitespace, etc. so you need to be specific about what your condition to be evaluated is. This example checks for something other than whitespace:

#!/usr/bin/env perl use strict; use warnings; my @line = <DATA>; print "OMG, line 7 is missing/blank!!!\n" unless $line[6] =~ /\S/; __DATA__ 1 2 3 4 5 6 8 9

"It doesn't work" is as useful to a developer as "I'm ill" is to a medic. Try to be specific. SSCCE is best.

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