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Sequence.group_by_mutable_map

group_by_mutable_map

(K

type

:

property.equatable, M

type

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

=>

container.Map K (Sequence 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 ¶

0.094dev (2025-07-10 15:41:47 GIT hash eafa42ae743de61b62f958948d7abb5fada7756f built by fridi@fzen)