Reduce a double in swift [duplicate]

Question

I am trying to reduce the amount of characters in a double. How Would I reduce this:

59.5220000

to

59.5

this in swift?

You should look into the NumberFormatter class. It may look daunting because it uses another class NSNumber, but NSNumbers are easily initialized from Doubles — AgRizzo
– AgRizzo, Commented Jun 5, 2019 at 18:34
Are you simply trying to round the result to once decimal place in the user interface? Or do you really need the number rounded for other reasons? — Rob
– Rob, Commented Jun 5, 2019 at 20:30

Alexander · Accepted Answer · 2019-06-05 18:31:33Z

2

A double doesn't have characters. A string rendering of it does. Rather than using the standard String() initializer (which is really only for development use, it's terrible for end-users), use NumberFormatter.

answered Jun 5, 2019 at 18:31

Alexander

63.9k13 gold badges106 silver badges177 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

jspcal · Accepted Answer · 2019-06-05 18:29:12Z

0

perhaps use a formatted string?

let str = String(format: "%.2f", 59.5220000)

answered Jun 5, 2019 at 18:29

jspcal

52k7 gold badges76 silver badges79 bronze badges

1 Comment

Rob Over a year ago

If this string is for display in the user interface, this String(format:_:) is not localized. NumberFormatter is much better solution for displaying results in the UI...

Collectives™ on Stack Overflow

Reduce a double in swift [duplicate]

2 Answers 2

Comments

1 Comment

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Linked

Related