[llvm] r218617 - Add "typedef T value_type;" to llvm::Optional<T>.

[Jordan Rose]

Author: jrose
Date: Mon Sep 29 13:56:05 2014
New Revision: 218617

URL: http://llvm.org/viewvc/llvm-project?rev=218617&view=rev
Log:
Add "typedef T value_type;" to llvm::Optional<T>.

Inspired by std::experimental::optional from the "Library Fundamentals" C++ TS.

Modified:
    llvm/trunk/include/llvm/ADT/Optional.h

Modified: llvm/trunk/include/llvm/ADT/Optional.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/Optional.h?rev=218617&r1=218616&r2=218617&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/Optional.h (original)
+++ llvm/trunk/include/llvm/ADT/Optional.h Mon Sep 29 13:56:05 2014
@@ -29,6 +29,8 @@ class Optional {
   AlignedCharArrayUnion<T> storage;
   bool hasVal;
 public:
+  typedef T value_type;
+
   Optional(NoneType) : hasVal(false) {}
   explicit Optional() : hasVal(false) {}
   Optional(const T &y) : hasVal(true) {