Preconditions

Simple static methods to be called at the start of your own methods to verify correct arguments and state.

Functions

checkArgument

fun checkArgument(expression: Boolean, errorMessage: Any)

Ensures that an expression checking an argument is true.

checkArgumentNonnegative

@IntRange(from = 0.toLong())

Ensures that that the argument numeric value is non-negative.

checkNotNull

fun <T> checkNotNull(reference: T?): T

Ensures that an object reference passed as a parameter to the calling method is not null.