3 ms·

He is talking about C. Continuations are irrelevant.

• kazinator 11y ago
  That point is clearly made in the comment you're replying to, with the additional point that if we are talking about C, then sizeof is an operator, not a function. It doesn't require parentheses, except when its operand is a type expression. No well-considered coding convention requires superfluous parentheses with sizeof, and there are good reasons to ban them. We should prefer code like: type *ptr = malloc(sizeof *ptr); /* no parens */ to type *ptr = malloc(sizeof (type)); In general it's often better to base sizeof on an ordinary expression rather than a type expression. If we don't use superfluous parentheses on sizeof, we can then look for sizeof followed by an open parenthesis to look for code where sizeof is applied to a type expression. sizeof (type) means "produce me a size_t value based on some arbitary type, without checking that it's related to anything in the surrounding code". It can be as dangerous as a (type) cast.