Add operator== and operator!= to folly::StlAllocator

Summary: Add operator== and operator!= to folly::StlAllocator, which are required by some other libraries.

Test Plan: Tested by running with recursive_wrapper in boost::variant, and unit tests in folly/test.

Reviewed By: delong.j@fb.com

FB internal diff: D541237

diff --git a/folly/StlAllocator.h b/folly/StlAllocator.h
index 5cefb24004bd7c0c7e96e241f66c246a21ffc170..3848343d4b47a2dc580fdf6267e37cc17aeb8c2e 100644 (file)
--- a/folly/StlAllocator.h
+++ b/folly/StlAllocator.h
@@ -116,6 +116,14 @@ class StlAllocator {
     typedef StlAllocator<Alloc, U> other;
   };
 
+  bool operator!=(const StlAllocator<Alloc, T>& other) const {
+    return alloc_ != other.alloc_;
+  }
+
+  bool operator==(const StlAllocator<Alloc, T>& other) const {
+    return alloc_ == other.alloc_;
+  }
+
  private:
   Alloc* alloc_;
 };