[Bf-blender-cvs] [c05ef1459c6] master: BLI: add Set.clear method

[Jacques Lucke]

Commit: c05ef1459c68e0a37e645b1c32caeea0961edef5
Author: Jacques Lucke
Date:   Tue Apr 28 16:41:37 2020 +0200
Branches: master
https://developer.blender.org/rBc05ef1459c68e0a37e645b1c32caeea0961edef5

BLI: add Set.clear method

===================================================================

M	source/blender/blenlib/BLI_set.hh
M	tests/gtests/blenlib/BLI_set_test.cc

===================================================================

diff --git a/source/blender/blenlib/BLI_set.hh b/source/blender/blenlib/BLI_set.hh
index f9d4bbfaed4..dc9df5d116a 100644
--- a/source/blender/blenlib/BLI_set.hh
+++ b/source/blender/blenlib/BLI_set.hh
@@ -284,6 +284,12 @@ class Set {
     return this->size() == 0;
   }
 
+  void clear()
+  {
+    this->~Set();
+    new (this) Set();
+  }
+
   /**
    * Returns true when there is at least one element that is in both sets.
    * Otherwise false.
diff --git a/tests/gtests/blenlib/BLI_set_test.cc b/tests/gtests/blenlib/BLI_set_test.cc
index ae46c2bf52e..90c052d7d2b 100644
--- a/tests/gtests/blenlib/BLI_set_test.cc
+++ b/tests/gtests/blenlib/BLI_set_test.cc
@@ -194,3 +194,11 @@ TEST(set, UniquePtrValues)
 
   EXPECT_EQ(set.size(), 3);
 }
+
+TEST(set, Clear)
+{
+  Set<int> set = {3, 4, 6, 7};
+  EXPECT_EQ(set.size(), 4);
+  set.clear();
+  EXPECT_EQ(set.size(), 0);
+}