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I had this problem when I accidentally deleted the method name. The code went from
bool bRet = MethodName(pData, pOutFilename); to
bool bRet = (pData, pOutFilename); but still compiled? What does this code do? What does it mean? It seems to return true, is this always the case (even if pData is null)?
Any ideas are welcome!
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Duplicate function definitions (a particular type of function declaration - which implements the function) are a problem. Practically, a compiler will give warnings or errors when multiple definitions of a function occur in a compilation unit.
Solution. Duplicate symbols occur when you have both added an implementation file (. cpp) to your project and #included it. This way, the implementation file (. cpp) gets compiled twice: once as a module in your project (as it is added to your project) and subsequently as a piece of #included code.
it is the "comma operator" which
evaluates its first operand and discards the result, and then evaluates the second operand and returns this value (and type).
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