4 Commits

Author	SHA1	Message	Date
Benjamin Kramer	8b9ddd6d36	Make the static instance of None just const. ... This way there shouldn't be any unused variable warnings. llvm-svn: 230010	2015-02-20 13:16:05 +00:00
Justin Bogner	720e999911	Disallow implicit conversions from None to integer types ... This fixes an error introduced in r228934 where None was converted to an int instead of the int being converted to an Optional as intended. We make that sort of mistake a compile error by changing NoneType into a scoped enum. Finally, provide a static NoneType called None to avoid forcing all users to spell it NoneType::None. llvm-svn: 229980	2015-02-20 07:28:28 +00:00
David Blaikie	2e8e3f41e9	Correct spelling of 'enumerator'. ... Post commit code review feedback to r175705 from Jordan Rose. llvm-svn: 175724	2013-02-21 06:08:22 +00:00
David Blaikie	7c7579badf	Provide a "None" value for convenience when using Optional<T>() ... This implementation of NoneType/None does have some holes but I haven't found one that doesn't - open to improvement. llvm-svn: 175696	2013-02-21 00:27:28 +00:00