Module array 

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

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

Functions

array_len_prefix_len

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

get_array_len

Reads a non-nullable array length. Returns an error if the encoded value is null, which is −1 or 0.

get_nullable_array_len

Reads a nullable array length. Returns None when the encoded value is null, which is −1 for non-flexible versions and 0 for flexible versions.

nullable_array_len_prefix_len

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

put_array_len

Writes a non-nullable array-length prefix.

put_nullable_array_len

Writes a nullable array-length prefix. None encodes as −1 for non-flexible versions, or 0 for flexible versions.