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I am writing a C++ library in Xcode 4.2.
One of my classes won't compile with this error:
attempt to use a deleted function
There is no specific indication what function it's talking about. I don't want to post the class code here, but does anybody have any idea what this error means?
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The delete key is a key on most computer keyboards which is typically used to delete either (in text mode) the character ahead of or beneath the cursor, or (in GUI mode) the currently-selected object. The key is sometimes referred to as the "forward delete" key.
Deleted function declaration is a new form of function declaration that is introduced into the C++11 standard. To declare a function as a deleted function, you can append the =delete; specifier to the end of that function declaration. The compiler disables the usage of a deleted function.
I had a similar message with threads (C++11). It turned out that I was passing the wrong number of parameters to the function called by the thread so the thread did not find any function suitable and gave that message.
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To add to Carlos' answer, I had the right number of arguments but one of the arguments was being passed by reference. Adding ref() around the variable fixed it for me. See here.
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