How to use BigDecimal on iOS (Kotlin Multiplatform)

Let's assume you want to use java.math.BigDecimal in a Kotlin Multiplatfrom project that targets Android and iOS. That means you want to do something like what is visible in the Use BigDecimal in commonMain commit:

import java.math.BigDecimal

[...]

val first = BigDecimal("5")
val second = BigDecimal("8")
val result = "I can count with BigDecimal: $first * $second = ${first*second}"

This doesn't compile on iOS by default though, Kotlin does not have BigDecimal. But with Kotlin/Native BigDecimal, you can just add the dependency to your project, and you get BigDecimal on iOS too.

Everything necessary is visible in the Add the Kotlin-Native-BigDecimal dependency so that BigDecimal works on iOS too commit:

Note

To be able to download from GitHub Packages, you need to set up a security token with read:packages scope. For details, please see About scopes and permissions for package registries.

maven {
    setUrl("https://maven.pkg.github.com/crossoid/Kotlin-Native-BigDecimal")
    credentials {
        username = [...see the commit for details...]
        password = [...see the commit for details...]
    }
}

[...]

kotlin {
    [...]
    sourceSets {
        [...]
        val iosArm64Main by getting {
            dependencies {
                implementation("com.crossoid:kotlin-native-bigdecimal:1.0")
            }
        }
        val iosSimulatorArm64Main by getting {
            dependencies {
                implementation("com.crossoid:kotlin-native-bigdecimal:1.0")
            }
        }
    }
}

If you are interested in details, please see the README

Enjoy!