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Re: OT: and even in Dart .........Re: simple session question [message #175738 is a reply to message #175725] Sat, 22 October 2011 23:39 Go to previous messageGo to previous message
Thomas Mlynarczyk is currently offline  Thomas Mlynarczyk
Messages: 131
Registered: September 2010
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Senior Member
Jerry Stuckle schrieb:
> But what is NOT defined is whether the assignment will occur before or
> after the value of $foo is actually incremented. Either is possible.

Yes, that was exactly what had confused me at first. But now I am
convinced that the most reasonable assumption is to increment at the
earliest possible moment, i.e. immediately after the result of the
expression $foo++ has been determined and before doing anything else.
After all, the RHS must be evaluated completely (including any side
effects this evaluation may have), before the result can be assigned to
the LHS. And wouldn't this also be the most simple implementation of the
evaluation algorithm? And it would allow for better optimization: the
statement $foo = $foo++; would be equivalent to a no op.

Greetings,
Thomas


--
Ce n'est pas parce qu'ils sont nombreux à avoir tort qu'ils ont raison!
(Coluche)
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