Module array 

Wire-level helpers for []<elem> and nullable []<elem> arrays.

Non-flexible arrays use a 4-byte big-endian INT32 length prefix (−1 for null). Flexible (compact) arrays use an unsigned varint whose value is len + 1 (0 means null).

Functions

array_len_prefix_len

Number of bytes consumed by a non-nullable array-length prefix.

get_array_len

Read a non-nullable array length. Returns an error if the encoded value is null (−1 / 0).

get_nullable_array_len

Read a nullable array length. Returns None when the encoded value is null (−1 non-flex, 0 flex).

nullable_array_len_prefix_len

Number of bytes consumed by a nullable array-length prefix.

put_array_len

Write a non-nullable array-length prefix.

put_nullable_array_len

Write a nullable array-length prefix. None encodes as −1 (non-flex) or 0 (flex).