Mark unused parameters in Kotlin

Question

I am defining some functions to be used as callbacks and not all of them use all their parameters.

How can I mark unused parameters so that the compiler won\'t give

Answer 1

One can disable these warnings by adding a kotlin compile option flag in build.gradle. To configure a single task, use its name. Examples:

compileKotlin {
    kotlinOptions.suppressWarnings = true
}

compileKotlin {
    kotlinOptions {
        suppressWarnings = true
    }
}

It is also possible to configure all Kotlin compilation tasks in the project:

tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
    kotlinOptions {
        // ...
    }
}

If one is using kotlin in Android and want to suppress kotlin compiler warnings, add below in app-module build.gradle file

android{
    ....other configurations
    kotlinOptions {
        suppressWarnings = true
    }
}

Whether you really need to suppress all kotlin warning for your project or not, its up to you.