Module symbol 

Global symbol interning for reversible string-to-ID mapping.

Structs

SymbolSnapshot

Owned symbol meanings copied together from one registry state.

Enums

SymbolSnapshotError

A complete symbol snapshot could not be admitted within its caller’s bounds.

Functions

clear

Clear all symbols. For testing/REPL only. WARNING: Invalidates all existing symbol IDs.

count

Number of interned symbols.

from_arrow

Convert Arrow DictionaryArray back to symbol IDs.

intern

Intern a string, returning its unique ID. Thread-safe. Returns existing ID if already interned.

memory_usage

Estimated memory usage in bytes.

resolve

Resolve an ID to its string. Panics if ID is invalid.

resolve_checked

Resolve an ID to its string if present.

snapshot_checked

Copies all requested symbols under one read lock, or returns no snapshot.

to_arrow

Convert a column of symbol IDs to Arrow DictionaryArray.