mirror of
https://github.com/openbsd/ports.git
synced 2026-06-18 15:33:55 +02:00
sthen
24 lines
1.2 KiB
Plaintext
24 lines
1.2 KiB
Plaintext
Bitarray provides an object type which efficiently represents an array
|
|
of booleans. Bitarrays are sequence types and behave very much like
|
|
usual lists. Eight bits are represented by one byte in a contiguous
|
|
block of memory (endianness can be specified).
|
|
|
|
Methods for accessing the machine representation are provided, including
|
|
the ability to import and export buffers. This allows creating bitarrays
|
|
that are mapped to other objects, including memory-mapped files.
|
|
|
|
* Sequence methods: slicing (including slice assignment and deletion),
|
|
operations +, *, +=, *=, the 'in' operator, len()
|
|
* Bitwise operations: ~, &, |, ^, <<, >> (as well as their in-place
|
|
versions &=, |=, ^=, <<=, >>=).
|
|
* Fast methods for encoding and decoding variable bit length prefix codes.
|
|
* Bitarray objects support the buffer protocol
|
|
* Packing and unpacking to other binary data formats, e.g. numpy.ndarray.
|
|
* Pickling and unpickling of bitarray objects.
|
|
* Immutable frozenbitarray objects which are hashable
|
|
* Sequential search
|
|
|
|
Utility functions include conversion to/from hex strings and integers,
|
|
(de-)serialization, pretty printing, creating Huffman codes, compression
|
|
of sparse bitarrays, various count functions and more.
|