（C＃）快速按顺序对多个Array项进行操作的方法？

Question

C# newbie working off some tutorials. Is there a way to run an identical command on every object in an array?

Here is my current (working) code:

     Guys[0].Cash += Guys[0].MyGuess.PayOut(WinnerNumber);
     Guys[1].Cash += Guys[1].MyGuess.PayOut(WinnerNumber);
     Guys[2].Cash += Guys[2].MyGuess.PayOut(WinnerNumber);

I'm looking for something that will do this:

     Guys[X].Cash += Guys[X].MyGuess.PayOut(WinnerNumber);

X = is first number on first runthrough, then 2nd number on 2nd runthrough, etc.

Answer 1

You have several options:

Plain old for loop :

for(int i = 0; i < Guys.Length; i++) {
    Guys[i].Cash += Guys[i].MyGuess.PayOut(WinnerNumber);
}

foreach block :

foreach(var guy in Guys) {
    guy.Cash += guy.MyGuess.PayOut(WinnerNumber);
}

Array.ForEach :

Array.ForEach(Guys, g => g.Cash += g.MyGuess.PayOut(WinnerNumber));

These, for me, are in order of preference. Most will prefer the for loop because that is the familiar way of doing something to every item in array in sequence. It's close though between for and foreach .

Answer 2

You can do it with a for loop:

for (int i = 0; i < Guys.Length; i++)
{
    Guys[i].Cash += Guys[i].MyGuess.PayOut(WinnderNumber);
}

Answer 3

Its a not-widely documented idiom that you can actually do this with the foreach command, as long as this is a object[] construct:

foreach(GuyObject guy in Guys) {
   guy.Cash += guy.MyGuess.Payout(WinnerNumber);
}

Guess I should add LAMBDA version as well:

Array.ForEach(guys, guy => guy.Cash += guy.MyGuess.Payout(WinnerNumber));