another safety belt

[lyx.git] / src / support / lyxalgo.h

diff --git a/src/support/lyxalgo.h b/src/support/lyxalgo.h
index 323f8e32f16a8b1269f00a817a53a72e52704b7a..a40d2a5cb60d6cb8d2e145978358cc94bc1920f8 100644 (file)
--- a/src/support/lyxalgo.h
+++ b/src/support/lyxalgo.h
@@ -1,4 +1,15 @@
 // -*- C++ -*-
+/**
+ * \file lyxalgo.h
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author Lars Gullik Bjønnes
+ *
+ * Full author contact details are available in file CREDITS
+ *
+ * A variety of useful templates.
+ */
 
 #ifndef LYX_ALGO_H
 #define LYX_ALGO_H
@@ -44,6 +55,10 @@ struct firster {
 };
 
 
+/**
+ * copy elements in the given range to the output iterator
+ * if the predicate evaluates as true
+ */
 template <class InputIter, class OutputIter, class Func>
 OutputIter copy_if(InputIter first, InputIter last,
               OutputIter result, Func func)
@@ -72,6 +87,15 @@ count (Iterator first, Iterator last, T const & value)
 #endif
 }
 
+/// Remove all duplicate entries in c.
+template<class C>
+void eliminate_duplicates(C & c)
+{
+       std::sort(c.begin(), c.end());
+       typename C::iterator p = std::unique(c.begin(), c.end());
+       c.erase(p, c.end());
+}
+
 } // namespace lyx
 
-#endif
+#endif // LYX_ALGO_H