slot_iterator_buf, slot_reverse_iterator_buf: Added typedefs for

2007-07-28  Michael Elkstrand  <michael@elehack.net>

* sigc++/macros/signal.h.m4: slot_iterator_buf, 
slot_reverse_iterator_buf: Added typedefs for 
value_type, reference, and pointer, so that these 
iterators are more like standard C++ iterators, so they can 
be used with standard C++ algorithms.  
* tests/Makefile.am:
* tests/test_accum_iter.cc: Added a test for this.
Bug #417926.

svn path=/trunk/; revision=284

1 files changed, 43 insertions, 0 deletions

diff --git a/tests/test_accum_iter.cc b/tests/test_accum_iter.cc
new file mode 100644
index 0000000..462c2ec
--- /dev/null
+++ b/tests/test_accum_iter.cc
@@ -0,0 +1,43 @@
+#include <sigc++/sigc++.h>
+#include <iostream>
+#include <algorithm>
+#include <functional>
+
+#include <new>
+SIGC_USING_STD(new)
+
+static int ident(int i)
+{
+    return i;
+}
+
+template<typename T>
+struct min_accum
+{
+    typedef T result_type;
+
+    template<class I>
+        typename std::iterator_traits<I>::value_type operator()(I i1, I i2)
+        {
+            return *std::min_element(i1, i2);
+        }
+};
+
+int main()
+{
+    sigc::signal0<int,min_accum<int> > signal;
+
+    signal.connect(
+            sigc::bind(sigc::ptr_fun(ident), 3));
+    signal.connect(
+            sigc::bind(sigc::ptr_fun(ident), 1));
+    signal.connect(
+            sigc::bind(sigc::ptr_fun(ident), 42));
+
+    int rv = signal();
+    std::cout <<rv <<std::endl;
+    if (rv != 1)
+        return 1;
+    else
+        return 0;
+}