[llvm] r273520 - [ADT] Add a range variant of std::transform

[David Majnemer via llvm-commits]

Author: majnemer
Date: Wed Jun 22 19:14:26 2016
New Revision: 273520

URL: http://llvm.org/viewvc/llvm-project?rev=273520&view=rev
Log:
[ADT] Add a range variant of std::transform

This will be used in a followup change in clang.

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

Modified: llvm/trunk/include/llvm/ADT/STLExtras.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/STLExtras.h?rev=273520&r1=273519&r2=273520&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/STLExtras.h (original)
+++ llvm/trunk/include/llvm/ADT/STLExtras.h Wed Jun 22 19:14:26 2016
@@ -427,6 +427,14 @@ auto count_if(R &&Range, UnaryPredicate
   return std::count_if(Range.begin(), Range.end(), P);
 }
 
+/// Wrapper function around std::transform to apply a function to a range and
+/// store the result elsewhere.
+template <typename R, class OutputIt, typename UnaryPredicate>
+OutputIt transform(R &&Range, OutputIt d_first, UnaryPredicate &&P) {
+  return std::transform(Range.begin(), Range.end(), d_first,
+                        std::forward<UnaryPredicate>(P));
+}
+
 //===----------------------------------------------------------------------===//
 //     Extra additions to <memory>
 //===----------------------------------------------------------------------===//