private static IValueReducer <Grade> FromDoubleReducer(
IValueReducer <double> reducer
)
{
return(new ValueReducer.ComposedReducer <double, Grade>(
reducer,
grade => grade.value,
value => new Grade(value)
));
}
public ComposedReducer(
IValueReducer <A> other,
Func <B, A> wrap,
Func <A, B> unwrap
)
{
this.other = other;
this.wrap = wrap;
this.unwrap = unwrap;
}
public Grade FinalGrade(IValueReducer <Grade> method)
{
var hwGrade = method.Reduce(homeworks);
return(0.3 * hwGrade + 0.7 * exam);
}
