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Sequence.group_by_mutable_map

group_by_mutable_map

(K

type

:

property.equatable, M

type

: container.Mutable_Map K (Sequence T), f Unary K T)

=>

container.Map K (Sequence T)¶

group the elements of this sequence by a key of type K
using a custom Mutable_Map

f determines the key of an element

Type Parameters

K

:

property.equatable ¶

M

:

container.Mutable_Map ¶

0.099dev (GIT hash 02118e9cbed77f3897084a4a507da3f11ac8881e)

last changed: 2026-09-02