👩‍💻 委派與委派表達樹

Func to Expression (Compile())

void Main()
{
 data.Where(GetNo5().Compile()).Dump();
}

public Expression<Func<int,bool>> GetNo5()
{
 return x => x == 5;
}

public List<int> data = new List<int>(){1,2,3,4,5,6,7,8,9};

Expression to Func

void Main()
{
 data.Where(GetNo(No1()).Compile()).Dump();
 data.Where(GetNo(No5()).Compile()).Dump();
}

public Expression<Func<int,bool>> GetNo(Func<int,bool> func)
{
 return x => func(x);
}

public Func<int,bool> No1() => x => x == 1;

public Func<int,bool> No5() => x => x == 5;

public List<int> data = new List<int>(){1,2,3,4,5,6,7,8,9};