I had always thought that variable length arrays were not allowed in c++(Refer :Why aren't variable-length arrays part of the C++ standard?) .But than why does this code compile and work? #inc...

http://clang.llvm.org/docs/BlockLanguageSpec.txt Looks really cool. However, I don't understand it. I don't see examples it. I don't see examples of ideas hard to express in C++ as is, but triv...