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POdellocating memory does it degrade the performance?
 

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  1. POdellocating memory does it degrade the performance?
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    <p>This is a basic Question for all programming languages, But I am much familiar with VBA.So Im using the vba code. I got some doubt with deallocating the memory.Does the performance degarde when we erase or swap off the allocated contents ? something like </p> <p><strong>Method I</strong> where we deallocate the allocated memory</p> <pre><code>sub my_function() Dim a() as string redim a(1 to 15) 'some for loop goes here aroung 50 iterations erase a ' Deallocate the array ' some piece of code goes here may be 40 lines end sub </code></pre> <p><strong>Method II</strong> where we dont deallocate any memory</p> <pre><code>sub my_function() Dim a() as string redim a(1 to 15) 'some for loop goes here aroung 50 iterations 'some piece of code goes here may be 40 lines end sub </code></pre> <p><strong>Method III</strong> where we dellocate memory at the last statment</p> <pre><code>sub my_function() Dim a() as string redim a(1 to 15) 'some for loop goes here aroung 50 iterations 'some piece of code goes here may be 40 lines erase a 'deallocate the memory end sub </code></pre> <p>The question </p> <p><strong>Method I</strong> is erase a, Does it eat up any huge cycles ? or more bytes of ram ? or should i wait for the end of the sub routine or should I go for using erase statement</p> <p><strong>Method II</strong> There is no erase statement in the sub routine, the function kills the array at the end of sub routine but I dont need the array till the end of function so is this fast enough or optimized?</p> <p><strong>Method III</strong> At the first watch, people say its a foolish thing to dellocate at the end of the sub routine as itself kills at the end,But I am eager to know Thanks </p>
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    1. CO"More lines = bad" -- I don't know where this attitude comes from. Checking string variable length as a means of checking if a string variable contains anything is a best practice since it's faster than a comparison.
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