split LyXText::rowlist_ into individual Paragraph::rows_ chunks

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

diff --git a/src/support/lyxalgo.h b/src/support/lyxalgo.h
index 323f8e32f16a8b1269f00a817a53a72e52704b7a..6bccfb12966bd75906e70470d093882dd2d9965d 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
@@ -6,6 +17,8 @@
 #include <utility>
 #include <iterator>
 #include <algorithm>
+#include <set>
+
 
 namespace lyx {
 
@@ -44,6 +57,10 @@ 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 +89,22 @@ count (Iterator first, Iterator last, T const & value)
 #endif
 }
 
+/// Remove all duplicate entries in c.
+template<class C>
+void eliminate_duplicates(C & c)
+{
+       C unique_c;
+       std::set<typename C::value_type> s;
+
+       for (typename C::iterator p = c.begin(); p != c.end(); ++p) {
+               if (s.find(*p) == s.end()) {
+                       unique_c.push_back(*p);
+                       s.insert(*p);
+               }
+       }
+       swap(c, unique_c);
+}
+
 } // namespace lyx
 
-#endif
+#endif // LYX_ALGO_H