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iOS Swift Basics (retired) Operators Binary Operators

Maikel Visser
Maikel Visser
240 Points
Posted by Maikel Visser
Maikel Visser
240 Points

when i try to use the code let areaInMeters = area / 10.764, i get the error message stating: Binary operator '/' cannot

when i try to use the code let areaInMeters = area / 10.764, i get the error message stating: Binary operator '/' cannot be applied to operands of type 'Int and 'Double'

7 Answers

Steve Hunter
Steve Hunter
57,712 Points

I think it wants the same type of number on both sides of the division. You've got Int / Double. If you decare your area to be a Double, this should be fine. You may be able to cast the int to a double, too.

This is down to 'strong typing' that Swift is very keen on.

I hope that helps.

Steve.

Ninyas Shamoel
Ninyas Shamoel
812 Points
Ninyas Shamoel
Ninyas Shamoel
812 Points

let areaInMeeters = Double(area) / 10.764

Phil Hanson
Phil Hanson
764 Points
Phil Hanson
Phil Hanson
764 Points

Now I am using El Capitan Beta and Xcode 7 Beta but what work for me is as others suggested declaring area as a double.

let areaInMeters = Double(area) / 10.764

gustavopares
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gustavopares
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So basically when I divide things it has to be Int / Int, Double / Double, or Float / Float?

Steve Hunter
Steve Hunter
57,712 Points

I think you need to think further than that. You need to think about what is receiving the result too - Int /Int may need the receiver to be expecting a Float as the result is relatively unlikely to be an Int unless we're losing loads of accuracy.

reesesherman
reesesherman
507 Points
reesesherman
reesesherman
507 Points

I get the exact same error, and it won't work no matter the suggestions made.

Scott Graney
Scott Graney
404 Points
Scott Graney
Scott Graney
404 Points

Thank you Ninyas Shamoel