Coroutines Extensions/io.github.rain991.extensions/withDefault

withDefault

fun <T> ERROR CLASS: Symbol not found for Flow<T>.withDefault(default: T): ERROR CLASS: Symbol not found for Flow<T>(source)

Emits the provided default value if the upstream flow is empty.

Example:

val emptyFlow = emptyFlow<Int>()
emptyFlow.withDefault(0).collect { println(it) }

Result is 0.

fun <T> ERROR CLASS: Symbol not found for Flow<T>.withDefault(default: T, shouldDefault: (Throwable) -> Boolean): ERROR CLASS: Symbol not found for Flow<T>(source)

Emits the provided default value if the upstream flow is empty and .

CancellationException is always rethrown.

Example:

val failingFlow = flow {
    emit(1)
    throw ArithmeticException()
    emit(2)
}
failingFlow.withDefault(0) { it is ArithmeticException }.collect { println(it) }

Result is 1, 0

Parameters

default

the value to emit if no value is emitted.

shouldDefault

returns default when true