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Kevin Gutowski
4,082 PointsUnsure about for loop
I'm a but confused about the for loop below (as in the video)
for coin in coins {
//loop here
}
What exactly does coin do? I don't recall going over this in the other swift videos. It feels like coin is just a dummy name which I can define as a or i and it would work just fine.
1 Answer
Taylor Amsler
4,427 PointsHi Kevin. That is exactly correct, coin is a dummy value. If you do not use it in the for-in loop Swift will most likely tell you to use a _ as a neutral placeholder. You absolutely could use a or i or whatever you wanted, but the dummy value IS necessary.
The purpose of the dummy value is to represent each individual value in the list. So coin here represents each value (each coin) in the values (all the coins) you have in your list. This is useful because you probably want to perform a different action for different individual values. For example your for-in loop might add a dime as +10 whereas a quarter might be +25.
Hope this was a clear explanation, I struggled with this for a bit too.
Kevin Gutowski
4,082 PointsKevin Gutowski
4,082 PointsThanks mate! I appreciate the response! Sounds like I should't think about it too hard :D