xutil

Documentation

Overview

Package xutil provides type-safe wrappers around sync.Map.

Index

• type SyncMap
  • func (m *SyncMap[K, V]) CompareAndDelete(key K, old V) (deleted bool)
  • func (m *SyncMap[K, V]) CompareAndSwap(key K, old, newValue V) bool
  • func (m *SyncMap[K, V]) Delete(key K)
  • func (m *SyncMap[K, V]) Load(key K) (value V, ok bool)
  • func (m *SyncMap[K, V]) LoadAndDelete(key K) (value V, loaded bool)
  • func (m *SyncMap[K, V]) LoadOrStore(key K, value V) (actual V, loaded bool)
  • func (m *SyncMap[K, V]) Range(f func(key K, value V) bool)
  • func (m *SyncMap[K, V]) Store(key K, value V)
  • func (m *SyncMap[K, V]) Swap(key K, value V) (previous V, loaded bool)

Types

type SyncMap

type SyncMap[K comparable, V any] struct {
	// contains filtered or unexported fields
}

SyncMap is a wrapper around sync.Map that provides type safety.

func (*SyncMap[K, V]) CompareAndDelete

func (m *SyncMap[K, V]) CompareAndDelete(key K, old V) (deleted bool)

CompareAndDelete deletes the entry for key if its value is equal to old. The old value must be of a comparable type.

If there is no current value for key in the map, CompareAndDelete returns false.

func (*SyncMap[K, V]) CompareAndSwap

func (m *SyncMap[K, V]) CompareAndSwap(key K, old, newValue V) bool

CompareAndSwap swaps the old and new values for key if the value stored in the map is equal to old. The old value must be of a comparable type.

func (*SyncMap[K, V]) Delete

func (m *SyncMap[K, V]) Delete(key K)

Delete deletes the value for a key.

func (*SyncMap[K, V]) Load

func (m *SyncMap[K, V]) Load(key K) (value V, ok bool)

Load returns the value stored in the map for a key, or zero value if no value is present.

func (*SyncMap[K, V]) LoadAndDelete

func (m *SyncMap[K, V]) LoadAndDelete(key K) (value V, loaded bool)

LoadAndDelete deletes the value for a key, returning the previous value if any. The loaded result reports whether the key was present.

func (*SyncMap[K, V]) LoadOrStore

func (m *SyncMap[K, V]) LoadOrStore(key K, value V) (actual V, loaded bool)

LoadOrStore returns the existing value for the key if present. Otherwise, it stores and returns the given value. The loaded result is true if the value was loaded, false if stored.

func (*SyncMap[K, V]) Range

func (m *SyncMap[K, V]) Range(f func(key K, value V) bool)

Range calls f sequentially for each key and value present in the map. If f returns false, range stops the iteration.

func (*SyncMap[K, V]) Store

func (m *SyncMap[K, V]) Store(key K, value V)

Store sets the value for a key.

func (*SyncMap[K, V]) Swap

func (m *SyncMap[K, V]) Swap(key K, value V) (previous V, loaded bool)

Swap swaps the value for a key and returns the previous value if any. The loaded result reports whether the key was present.