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AppGameKit Classic Chat / statement evaluation order

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tmu
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Posted: 17th Apr 2017 20:12
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Statements such as this seem to always get fully evaluated:



I would expect that the GetSpriteHitTest() would not be called. Now it gets called and crash follows.

Tricks / chance of "fix"?

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PSY
Developer
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Joined: 3rd Jul 2016
Location: Laniakea Supercluster
Posted: 17th Apr 2017 20:51 Edited at: 17th Apr 2017 20:52
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Easy method:


Safe method:


PSY
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tmu
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Posted: 17th Apr 2017 20:55
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Thanks PSY. I mostly do your easy method but keep forgetting it because that is not how other programming languages work. So getting lots of bugs like this..
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PSY
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Posted: 17th Apr 2017 21:05
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Yeah, same here
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george++
AGK Tool Maker
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Location: Thessaloniki, Hellas
Posted: 18th Apr 2017 00:14
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@tmu: the behaviour of your example shows that the compiler could be more clever and fast.
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nz0
AGK Developer
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Location: Cheshire,UK
Posted: 18th Apr 2017 00:48
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It has been mentioned before about the lack of short-circuit evaluation.
Means complex checks can take a lot longer (or less if you construct your code to test the "most likely" exit condition).
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