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Fuzion • Library Modules • lock_free • option

option

option

option
(T 
type
)
:
switch T, nil,orderable,hashable
[Contains abstract features]
[Module base]
[src]
option -- feature wrapping a value or nothing

option represents an optional value of type T

Type Parameters

T
:
Any
[Module base]
[src]

Functions

group_hashable_by
(K 
type
:
property.hashable, f Unary K T)
 => 
container.Map K (Sequence T)
[Inherited from  Sequence]
[src]
group the elements of this sequence by a key of type K

f determines the key of an element
0.095dev (2026-02-20 12:42:29 GIT hash dbcc3e4b3d2a59f66230b482cff8f0b018178d77 built by fridi@fzen)
last changed: 2026-02-20