In my MPP app I'm trying to create an `NSDecimal` from a `String` . However I'm not sure how to as t...

# multiplatform

[kierans777]

In my MPP app I'm trying to create an NSDecimal from a String . However I'm not sure how to as the NSDecimal constructor only takes a NativePtr argument. Can someone tell me how to do this please? 😄

[russhwolf]

There’s a bunch of different constructors, so you might need to specify a parameter name to make sure you’re using the right one. Eg val nsDecimal = NSDeclmal(string = "123.456")

[kierans777]

Thanks @russhwolf. However no luck

[kierans777]

Given in Swift you can construct a Decimal from a string, I'm very confused here ...

[ephemient]

Kotlin/Native interop is at the Objective-C level, not Swift, so you should do the same thing you do in Objective-C: work with NSDecimalNumber and use .decimalNumber to get a Swift-compatible Decimal as needed

[kierans777]

Thanks @ephemient. Getting closer. However .decimalNumber returns a CValue<NSDecimal>

I'm trying to create a function that returns a NSDecimal and the compiler doesn't like returning a CValue<NSDecimal>

type kotlinx.cinterop.CValue<platform.Foundation.NSDecimal>  of return value is not supported here: not a structure or too complex

[Konstantin Tskhovrebov]

fun foo(str: String): NSDecimal = NSDecimal(NSDecimalNumber(string = str).objcPtr())

does it work?

[kierans777]

@Konstantin Tskhovrebov Yes it did. Thanks.

[kierans777]

@Konstantin Tskhovrebov Now I just have to figure out why my tests are segfaulting when running on iOS (https://kotlinlang.slack.com/archives/C3PQML5NU/p1650596218842939)