assert

JVM
1.0
fun assert(value: Boolean)
(source)
Native
1.3
@ExperimentalNativeApi fun assert(value: Boolean)
(source)
For JVM

Throws an AssertionError if the value is false and runtime assertions have been enabled on the JVM using the -ea JVM option.

For Native

Throws an AssertionError if the value is false and runtime assertions have been enabled during compilation.

JVM
1.0
inline fun assert(value: Boolean, lazyMessage: () -> Any)
(source)
Native
1.3
@ExperimentalNativeApi inline fun assert(
    value: Boolean,
    lazyMessage: () -> Any)

(source)
For JVM

Throws an AssertionError calculated by lazyMessage if the value is false and runtime assertions have been enabled on the JVM using the -ea JVM option.

For Native

Throws an AssertionError calculated by lazyMessage if the value is false and runtime assertions have been enabled during compilation.