const classafConcurrent::LocalMap

sys::Obj
  afConcurrent::LocalMap

Manages a Map stored in Actor.locals with a unique key.

Note that LocalMaps are lazy; that is, no Map is created or stored in Actor.locals until accessed.

caseInsensitive

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const Bool caseInsensitive := false

Configures case sensitivity for maps with Str keys.

LocalMap("name") { it.keyType = Str#; it.caseInsensitive = true }
syntax: fantom

clear

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This clear()

Remove all key/value pairs from the map. Return this.

containsKey

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Bool containsKey(Obj key)

Returns true if the map contains the given key

def

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const Obj? def := null

The default value to use for get when a key isn't mapped.

each

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Void each(|Obj?,Obj c)

Call the specified function for every key/value in the map.

get

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@Operator Obj? get(Obj key, Obj? def := this.def)

Returns the value associated with the given key. If key is not mapped, then return the value of the def parameter. If def is omitted it defaults to null.

getOrAdd

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Obj? getOrAdd(Obj key, |Obj->Obj? valFunc)

Returns the value associated with the given key. If it doesn't exist then it is added from the value function.

This method is thread safe. valFunc will not be called twice for the same key.

isEmpty

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Bool isEmpty()

Return true if size() == 0

keyType

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const Type keyType := sys::Obj#

Used to parameterize the backing map. Must be non-nullable.

LocalMap("name") { it.keyType = Int# }

keys

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Obj[] keys()

Returns a list of all the mapped keys.

localRef

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const LocalRef localRef

The LocalRef this LocalMap wraps.

make

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new make(Str name := "LocalMap", |This? f := null)

Makes a LocalMap instance. name is passed to LocalRef.

ordered

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const Bool ordered := false

If true the map will maintain the order in which key/value pairs are added.

LocalMap("name") { it.ordered = true }

remove

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Obj? remove(Obj key)

Remove the key/value pair identified by the specified key from the map and return the value. If the key was not mapped then return null.

set

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@Operator Void set(Obj key, Obj? item)

Sets the key / value pair, ensuring no data is lost during multi-threaded race conditions. Though the same key may be overridden. Both the key and val must be immutable.

size