Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift 2.0 Collections and Control Flow Control Flow With Loops While and Repeat While

increment operator ++ and +=

Hi, What is the difference b/w increment operator ++ and +=? Thanks.

1 Answer

Take a look at these examples:

var number = 0

number++  // This will increase the number variable by one
number += 3  // This will increase the number variable by three

Hope that helps! :dizzy:

Alex Loren
Alex Loren
6,681 Points

This being said, for some reason the Code Challenge for this lesson will only seems to accept the ++ operator and not the += operator.

Brian Kasper
Brian Kasper
464 Points

in Swift 3 what would +=0 do to a variable?

Thanks

I think it should keep the same value.