Fast Array Loading
BlitzMax Forums/BlitzMax Programming/Fast Array Loading
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Is there a way to create an array in this manner?
MyArray[9] = {0,1,2,3,4,5,6,7,8}
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| From the doc 'Auto arrays' may be created using the syntax: [Element1,Element2 etc...] This returns a 1 dimensional array containing the specified elements, for example: Local int_array[]=[1,2,3,4,5] Each element of an auto array must have exactly the same type. If necessary, you can use type conversions to enforce this. |
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| Bascially use square brackets on the right hand side of the = and don't specify the size of the array. |
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| But it is not faster. This is actually calling the slicing mechanics and is slower than initializing the array with new and handfilling it! |
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| When you say 'Not faster' do you mean to process or to input? I would guess that the number of items you'd have to add to make any difference in processing would mean it was NOT a good idea to enter them in the 'Auto array' fashion anyway. |
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| It is not faster program execution wise. Typing a few letters does not make a difference to me, even if I handfill a 4x4 matrix. But if you play lazy ass you will learn that the compiler does not replace that with a more performance friendly construct (ie my handwritten one) and that you will lose a fair amount of performance. No problem for a single instance array, there I wouldn't use the handwrite approach But for vectors and the like (speed critical), this approach is plain wrong and defeats the purpose of optimized math routines. |
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| I'm just setting the initial values and they won't change. Hmm...this is throwing an Int to Float error: Local myarray:Float[] = [0,1,2,3,4,5,6,7,8] EDIT: Nm, I fixed it. Local myarray:Float[] = [0.0,1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0] |
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