Extract logic to NoteDataUtil::StringInterpretsAs

src/NoteDataUtil.cpp

@@ -11,6 +11,17 @@
 #include "TimingData.h"
 #include <utility>
 
+bool NoteDataUtil::StringInterpretsAs( const std::string& str, int integer ) {
+	try
+	{
+		return std::stoi( str ) == integer;
+	}
+	catch ( const std::invalid_argument & )
+	{
+		return false;
+	}
+}
+
 // TODO: Remove these constants that aren't time signature-aware
 static const int BEATS_PER_MEASURE = 4;
 static const int ROWS_PER_MEASURE = ROWS_PER_BEAT * BEATS_PER_MEASURE;