hello, it might be trivial but... how to format ...

# multiplatform

[Radoslaw Juszczyk]

hello,

it might be trivial but...

how to format a double to two decimal points like 1.123456 -> "1.12" so the decimal point is marked with .
with pure kotlin?

I can see that .format in kotlin stdlib uses java java.lang.String.format so it depends on the current locale whether it is . or ,

I want to be able to enforce it to use . .

[ephemient]

https://youtrack.jetbrains.com/issue/KT-21644/Add-utility-function-for-formatting-of-decimal-numbers-to-Kotlin-common-library

[Radoslaw Juszczyk]

thank you, that is very useful

[Landry Norris]

Technically you could substring from 0 to indexOf('.')

[Radoslaw Juszczyk]

@Landry Norris but in some languages it is "1.123" and some others it might be "1,123" and then 1.1 I want to be "1.100"

[ephemient]

if you're using String.format on JVM, there is an overload with a Locale parameter

[Radoslaw Juszczyk]

I know I know, but I want to have it in commonMain and use it later in iOS project too. So I was hoping there is pure kotlin function.

Anyway for now I wrote a simple function which achieves the same with stringbuilder and bunch of multiplications and modulo operations.

[ephemient]

there is no pure Kotlin format. Double.toString() does not depend on locale and always uses . (although its output does vary slightly on different platforms)