do {…} while(false)

Question

I was looking at some code by an individual and noticed he seems to have a pattern in his functions:

 function()
{
 

        

Answer 1

This trick is used by programmers that are too shy to use an explicit goto in their code. The author of the above code wanted to have the ability to jump directly to the "cleanup and return" point from the middle of the code. But they didn't want to use a label and explicit goto. Instead, they can use a break inside the body of the above "fake" cycle to achieve the same effect.