Re^6: One out of three ain't bad (! !!)

So, once again in Perl,

$conjecture->obviously_so == 1 && $conjecture->true == 0
[download]

Thanks, tye, for testing something I should've! (tho' the logic of Boolean diadics not returning Boolean values escapes me...)

Comment on Re^6: One out of three ain't bad (! !!) Download Code

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Re^7: One out of three ain't bad (\|\|@x) by tye (Sage) on Oct 26, 2005 at 02:12 UTC
(tho' the logic of Boolean diadics not returning Boolean values escapes me...) It allows idioms such as: `$hostname \|\|= 'localhost';` [download] Since that is just short for: `$hostname= $hostname \|\| 'localhost';` [download] it'd set $hostname to just 'true' if Boolean operators returned Boolean values. Of course, the above is short-hand for: `$hostname= 'localhost' if ! $hostname;` [download] but the first form is the only one that manages to not repeat `$hostname`, which can be quite an advantage in some cases, or across a bunch of similar cases. And there are other similar idioms that are useful because of this property. In any case, it is quite "Perlish". - tye	[reply] [d/l] [select]

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Re^7: One out of three ain't bad (||@x)
by tye (Sage) on Oct 26, 2005 at 02:12 UTC

(tho' the logic of Boolean diadics not returning Boolean values escapes me...)

It allows idioms such as:

$hostname ||= 'localhost';
[download]

Since that is just short for:

$hostname= $hostname || 'localhost';
[download]

it'd set $hostname to just 'true' if Boolean operators returned Boolean values. Of course, the above is short-hand for:

$hostname= 'localhost'  if ! $hostname;
[download]

but the first form is the only one that manages to not repeat $hostname, which can be quite an advantage in some cases, or across a bunch of similar cases. And there are other similar idioms that are useful because of this property.

In any case, it is quite "Perlish".

- tye

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[d/l]
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