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iOS

Posted by chrisverra
chrisverra
3,760 Points

++ not a binary operator

for var i = 0; i < todo.count; i++{ // this gives an error : not a known binary operator
   print(todo[i])
    i++
}

When i change it to:

for var i = 0; i < todo.count; i+1{ // now it does work
   print(todo[i])
    i++
}

howcome ++ is not valid? other languages also do it like this, is this new in swift or something? the example in the video also do ++

3 Answers

Michael Reining
Michael Reining
10,101 Points
Michael Reining
Michael Reining
10,101 Points

Hi Chris,

You just have to add a space after the ++ to make your code work like this.

for var i = 0; i < todo.count; i++ { // this gives an error : not a known binary operator
    print(todo[i])
    i++
}

I hope that helps,

Mike

PS: Thanks to the awesome resources on Team Treehouse, I just launched my first app. :-)

Code! Learn how to program with Swift

chrisverra
chrisverra
3,760 Points

looks cool Michael

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi Chris,

If you add a space between the i++ and the curly brace, it should work just fine.

Steve.

chrisverra
chrisverra
3,760 Points
chrisverra
chrisverra
3,760 Points

man, that was stupid :D thanks guys

Steve Hunter
Steve Hunter
57,712 Points

Hey, no problem! :-)