Add DynamicState::find_if()

opm/parser/eclipse/EclipseState/Schedule/DynamicState.hpp

@@ -24,6 +24,7 @@
 #include <stdexcept>
 #include <vector>
 #include <algorithm>
+#include <utility>
 
 #include <opm/parser/eclipse/EclipseState/Schedule/TimeMap.hpp>
 
@@ -152,6 +153,14 @@ class DynamicState {
         return std::distance( m_data.begin() , iter );
     }
 
+    template<typename P>
+    int find_if(P&& pred) const {
+        auto iter = std::find_if(m_data.begin(), m_data.end(), std::forward<P>(pred));
+        if( iter == this->m_data.end() ) return -1;
+
+        return std::distance( m_data.begin() , iter );
+    }
+
     /// Will return the index of the first value which is != @value, or -1
     /// if all values are == @value
     int find_not(const T& value) const {