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-rw-r--r--src/base/AnalysisTypes.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/base/AnalysisTypes.h b/src/base/AnalysisTypes.h
index 7fe8a6a..bc6e9ed 100644
--- a/src/base/AnalysisTypes.h
+++ b/src/base/AnalysisTypes.h
@@ -27,6 +27,7 @@
#include <map>
#include <set>
#include <vector>
+#include <functional>
#include "NotationTypes.h"
@@ -157,7 +158,7 @@ protected:
typedef std::pair<double, ChordLabel> ChordPossibility;
typedef std::vector<ChordPossibility> HarmonyGuess;
typedef std::vector<std::pair<timeT, HarmonyGuess> > HarmonyGuessList;
- struct cp_less : public std::binary_function<ChordPossibility, ChordPossibility, bool>
+ struct cp_less : public std::function<bool(ChordPossibility, ChordPossibility)>
{
bool operator()(ChordPossibility l, ChordPossibility r);
};