Re^2: Logic expression evaluation not working. What am I doing wrong?

"The expression !1 evaluates to ''" I tried the following:

#!/usr/bin/perl
use strict;
use warnings;

printf "%b\n", !1;
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which output the following:

0
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on my Linux machine. So, not sure under what circumstances, like you say that it outputs '' empty string.
Can you elaborate a bit for novices like myself please?
TIA.

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Re^3: Logic expression evaluation not working. What am I doing wrong? by AnomalousMonk (Archbishop) on Jan 04, 2016 at 05:05 UTC
I was thinking of the following ~~contexts~~ \| examples: `c:\@Work\Perl>perl -wMstrict -le "print '>', !1, '<';" >< c:\@Work\Perl>perl -wMstrict -le "print '>', !1 && 1, '<';" ><` [download] In numeric contexts such as that supplied by the `%b` printf format specifier, !1 will, I think, always evaluate to numeric 0 — but it would be best to do some research on this! Give a man a fish: `<%-{-{-{-<`	[reply] [d/l] [select]

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Re^3: Logic expression evaluation not working. What am I doing wrong?
by AnomalousMonk (Archbishop) on Jan 04, 2016 at 05:05 UTC

I was thinking of the following ~~contexts~~ | examples:

c:\@Work\Perl>perl -wMstrict -le "print '>', !1, '<';"
><
c:\@Work\Perl>perl -wMstrict -le "print '>', !1 && 1, '<';"
><
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%b

printf

think

Give a man a fish: <%-{-{-{-<

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[d/l]
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