Is this a safe way to clear an array?
BlitzMax Forums/BlitzMax Programming/Is this a safe way to clear an array?
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| myarray = myarray[..0] It works, so is it cool from a GC point of view? If I rexpand the array with myarray = myarray[..1] any data I stored in slot [0] has indeed disappeared so it works e.g. Strict Local test$[] test = test[..1] test[0] = "hello" test = test[..0] test = test[..1] Print test[0] |
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| test = Null?! |
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| Sorry let me be more specific. I want to clear it for REUSE not totally clear it forever. |
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| I want to clear it for REUSE not totally clear it forever. The difference between what you're doing and what Vertex suggests is purely academic. |
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| Oh, ok. For byte, short, int, long, float and double it should work with MemClear(Array, Arraysize). For instances and strings too, but I dont't think, that GC is so clever, to detect this freeed resources. cu olli |
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| Sorry let me be more specific. I want to clear it for REUSE not totally clear it forever. You still got the flu? |
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I just wasn't sure if this would work:Strict Local test$[1] test = Null test = test[..1] test[0] = "hi" Print test[0] but it does :-) and yes I still have the flu a little bit but I'm not using it as an excuse ;-) |
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Just allocate a whole new array for the size you want:Local test$[] test = new String[2] test[0] = "hello" test[1] = "world" Print test[0] Print test[1] test = new String[1] test[0] = "hi" Print test[0] |
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| Thanks rich, I know I can do that, but I'm specifically uses slices becuase it's part of a larger piece of code that dynamically grows the arrays. |
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| if you are going to reuse it, is it really necessary to clear it? maybe you could have a single element that designates 'clear' or 'full' if arr[0]=1 then 'active' ( array is in use) if arr[0] = 0 then 'clear' (don't use it) or you could have another var. arrayactive:int = true/false |
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| I see Grey, then I guess what you were doing before is probably the best solution. |
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