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expalmer/gist:5f1693761a94c215cb23

Created August 16, 2014 19:26
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Vazio é true ou false ? by @wbruno
Raw
gistfile1.ps1
# PHP
$ php -r "var_dump( (boolean)'') .PHP_EOL;"
bool(false)
# NodeJs
$ node
> !!""
false
# ShellScript
$ vim boolean.sh
if [ "" = true ] ; then
echo 'true'
else
echo 'false'
fi
:wq!
$ sh boolean.sh
false
# Ruby
$ irb
> !!""
(irb):1: warning: string literal in condition
=> true
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