runtime/dev.zacsweers.metro.internal/InstanceFactory

InstanceFactory

class InstanceFactory<T> : Factory<T> , Lazy<T> (source)

A Factory implementation that returns a single instance for all invocations of invoke.

Note that while this is a Factory implementation, and thus unscoped, each call to invoke will always return the same instance. As such, any scoping applied to this factory is redundant and unnecessary. However, using this with DoubleCheck.provider is valid and may be desired for testing or contractual guarantees.

Types

object Companion

Properties

open override val value: T

Functions

open operator override fun equals(other: Any?): Boolean

inline fun <T, R> Provider<T>.flatMap(crossinline transform: (T) -> Provider<R>): Provider<R>

Lazily maps this Provider's value to another Provider of type R.

open override fun hashCode(): Int

open operator override fun invoke(): T

open override fun isInitialized(): Boolean

inline fun <T, R> Provider<T>.map(crossinline transform: (T) -> R): Provider<R>

Lazily maps this Provider's value to another Provider of type R.

fun <T> Provider<T>.memoize(): Provider<T>

Returns a memoizing Provider instance of this provider.

fun <T> Provider<T>.memoizeAsLazy(): Lazy<T>

Returns a memoizing Lazy instance of this provider.

open override fun toString(): String

inline fun <T, R, V> Provider<T>.zip(other: Provider<R>, crossinline transform: (T, R) -> V): Provider<V>

Lazily zips this Provider's value with another Provider of type R and returns a Provider of type V.