Crate tiders_cast 

tiders-cast

Type casting and encoding/decoding utilities for Arrow columns and schemas.

Provides batch-level and column-level operations for:

• Type casting: Convert columns between Arrow data types by name or by source type.
• Hex encoding/decoding: Binary columns to/from hex strings (with optional 0x prefix).
• Base58 encoding/decoding: Binary columns to/from Base58 strings (Bitcoin alphabet).
• U256 conversion: Between Decimal256(76,0) and big-endian binary representations.

Functions

base58_decode_column

Decodes a Base58-encoded string column to binary.

base58_encode

Encodes all Binary and LargeBinary columns in the batch to Base58 (Bitcoin alphabet) strings.

base58_encode_column

Encodes a single binary column to Base58 strings.

cast

Casts columns according to given (column name, target data type) pairs.

cast_by_type

Casts all columns with from_type to to_type.

cast_schema

Casts column types according to given (column name, target data type) pairs.

cast_schema_by_type

Casts columns with from_type to to_type

decimal128_to_be16

Encodes a Decimal128 column as fixed 16-byte big-endian two’s-complement binary.

decimal256_to_be32

Encodes a Decimal256 column as fixed 32-byte big-endian two’s-complement binary.

flatten_record_batch

Flattens all Struct columns in a RecordBatch into top-level columns, dot-joining names as it recurses.

flatten_schema

Schema-only mirror of flatten_record_batch.

hex_decode_column

Decodes a hex-encoded string column to binary.

hex_encode

Encodes all Binary and LargeBinary columns in the batch to hex strings.

hex_encode_column

Encodes a single binary column to hex strings.

large_ints_to_binary

Converts large-integer Decimal columns (Decimal256(_, 0) and Decimal128(_, 0)) to fixed-width big-endian two’s-complement binary (32 bytes and 16 bytes respectively). Other columns pass through unchanged.

schema_binary_to_string

Converts binary fields to string in the schema

schema_decimal256_to_binary

Converts decimal256 fields to binary in the schema

schema_large_int_to_binary

Schema-only mirror of large_ints_to_binary: rewrites scale-0 Decimal256 and Decimal128 fields to Binary. Other fields pass through unchanged.

u256_column_from_binary

Converts a big-endian binary column (up to 32 bytes) to Decimal256(76,0).

u256_column_to_binary

Converts a Decimal256(76,0) column to trimmed big-endian binary.

u256_to_binary

Converts all Decimal256 (U256) columns in the batch to big endian binary values