[Assorted-commits] SF.net SVN: assorted:[902] sandbox/trunk/src/cc/sort.cc

[<yan...@us...>]

Revision: 902
          http://assorted.svn.sourceforge.net/assorted/?rev=902&view=rev
Author:   yangzhang
Date:     2008-07-21 16:12:13 +0000 (Mon, 21 Jul 2008)

Log Message:
-----------
added sort.cc

Added Paths:
-----------
    sandbox/trunk/src/cc/sort.cc

Added: sandbox/trunk/src/cc/sort.cc
===================================================================
--- sandbox/trunk/src/cc/sort.cc	                        (rev 0)
+++ sandbox/trunk/src/cc/sort.cc	2008-07-21 16:12:13 UTC (rev 902)
@@ -0,0 +1,30 @@
+#include <algorithm>
+#include <vector>
+using namespace std;
+
+class cmp {
+  public: bool operator()(int a, int b) const { return a < b; }
+} cmp;
+
+int
+main()
+{
+  vector<int> xs;
+
+  // This doesn't work.  From
+  //
+  // http://www.gamedev.net/community/forums/topic.asp?topic_id=390922&whichpage=1&#2587523
+  //
+  // "I thought you could declare classes local to functions, but apparently
+  // not. I moved it to the global scope and it works fine. Thanks guys."
+  //
+  // "You can to some extent, but they will have internal linkage. Template
+  // parameters must have external linkage, which rules out local types."
+  //
+  // class cmp {
+  //   public: bool operator()(int a, int b) const { return a < b; }
+  // } cmp;
+
+  sort(xs.begin(), xs.end(), cmp);
+  return 0;
+}


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