SnapshotStateMap

Kotlin |Java

@Stable class SnapshotStateMap<K, V> : MutableMap<K, V>, StateObject

kotlin.Any
↳	androidx.compose.runtime.snapshots.SnapshotStateMap

An implementation of MutableMap that can be observed and snapshot. This is the result type created by androidx.compose.runtime.mutableStateMapOf.

This class closely implements the same semantics as HashMap.

Summary

Public constructors
`<init>()` An implementation of MutableMap that can be observed and snapshot.

Public methods
Unit	`clear()`
Boolean	`containsKey(key: K)`
Boolean	`containsValue(value: V)`
V?	`get(key: K)`
Boolean	`isEmpty()`
Unit	`prependStateRecord(value: StateRecord)` Add a new state record to the beginning of a list.
V?	`put(key: K, value: V)`
Unit	`putAll(from: Map<out K, V>)`
V?	`remove(key: K)`

Inherited functions

From class StateObject

StateRecord?

mergeRecords(previous: StateRecord, current: StateRecord, applied: StateRecord)

Produce a merged state based on the conflicting state changes.

This method must not modify any of the records received and should treat the state records as immutable, even the applied record.

Properties
MutableSet<MutableEntry<K, V>>	`entries`
StateRecord	`firstStateRecord` The first state record in a linked list of state records.
MutableSet<K>	`keys`
Int	`size`
MutableCollection<V>	`values`

SnapshotStateMap()

An implementation of MutableMap that can be observed and snapshot. This is the result type created by androidx.compose.runtime.mutableStateMapOf.

This class closely implements the same semantics as HashMap.

See Also

fun clear(): Unit

fun containsKey(key: K): Boolean

fun containsValue(value: V): Boolean

fun get(key: K): V?

fun isEmpty(): Boolean

fun prependStateRecord(value: StateRecord): Unit

Add a new state record to the beginning of a list. After this call firstStateRecord should be value.

fun put(
    key: K, 
    value: V
): V?

fun putAll(from: Map<out K, V>):