Re^4: Variable assignment error checking

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Re^5: Variable assignment error checking by Anonymous Monk on Dec 15, 2013 at 10:13 UTC
no, its shorthand of Re: Variable assignment error checking	[reply]
Re^6: Variable assignment error checking by hdb (Monsignor) on Dec 15, 2013 at 10:20 UTC
It is not! In this expression: `$var = func($var) \|\| $var;` [download] the return value of `func($var)` will be assigned to `$var` if `func($var)` is true, otherwise the value of `$var`. In this expression `$var \|\|= func( $var );` [download] the return value of `func($var)` will be assigned to `$var` if `$var` is false. Completely different logic! The expression `$var \|\|= func( $var );` is shorthand for `$var = $var \|\| func( $var );`. Can you spot the difference?	[reply] [d/l] [select]
Re^7: Variable assignment error checking by Anonymous Monk on Dec 15, 2013 at 10:36 UTC
`$var = $var \|\| func( $var ); $var = func( $var ) \|\| $var;` [download] They're certainly logically equivalent if we disregard the short-circuiting nature of operators. (Though the mathematics branch of logic generally deals with no other return values than true and false...)	[reply] [d/l]
Re^8: Variable assignment error checking by hdb (Monsignor) on Dec 15, 2013 at 10:41 UTC