Module ic_stable_structures::btreemap

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Expand description

This module implements a key/value store based on a B-Tree in stable memory.

V1 layout

---------------------------------------- <- Address 0
Magic "BTR"                 ↕ 3 bytes
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Layout version              ↕ 1 byte
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Max key size                ↕ 4 bytes
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Max value size              ↕ 4 bytes
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Root node address           ↕ 8 bytes
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Length (number of elements) ↕ 8 bytes
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Reserved space              ↕ 24 bytes
---------------------------------------- <- Address 52
Allocator
----------------------------------------
... free memory for nodes
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Structs

BTreeMap
A “stable” map based on a B-tree.
Iter
An iterator over the entries of a BTreeMap.

Enums

InsertError
An error returned when inserting entries into the map.