Re^4: Variable assignment error checking

The OP requested to assign the return value of func($var) if that return value is true. Otherwise, to hold the original value of $var.

You coughed up this: If $var is true, keep it, otherwise store a return value from func($var).

To put it another way: Specification: if the function returns a true value, store it. Otherwise keep the original value.

Your solution: If the original value is true keep it, otherwise call the function and keep its return value instead.

Inverted logic. But you're not alone; several people upvoted your post, so it must be an easy mistake to make.

Dave

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Re^5: Variable assignment error checking by Anonymous Monk on Dec 17, 2013 at 07:26 UTC
... Inverted logic. But you're not alone; several people upvoted your post, so it must be an easy mistake to make. This :) When brain function less (like sleep deprivation), pattern recognition takes place instead of logic processing ... and `$foo = bar($foo) \|\| $foo;` is so close to `$foo = $foo \|\| bar($foo);` the association to `$foo \|\|= bar( $foo );` happens, and tired brain fail to realize they're different human brains, what can I tell you :) hmm, its more like logic processing doesn't check pattern recognition ... argument validation, even for brains	[reply] [d/l] [select]

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Re^5: Variable assignment error checking
by Anonymous Monk on Dec 17, 2013 at 07:26 UTC

... Inverted logic. But you're not alone; several people upvoted your post, so it must be an easy mistake to make.

This :) When brain function less (like sleep deprivation), pattern recognition takes place instead of logic processing ... and $foo = bar($foo) || $foo; is so close to $foo = $foo || bar($foo); the association to $foo ||= bar( $foo ); happens, and tired brain fail to realize they're different

human brains, what can I tell you :)

hmm, its more like logic processing doesn't check pattern recognition ... argument validation, even for brains

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