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bit (version 4.5.0.1)

Classes and Methods for Fast Memory-Efficient Boolean Selections

Description

Provided are classes for boolean and skewed boolean vectors, fast boolean methods, fast unique and non-unique integer sorting, fast set operations on sorted and unsorted sets of integers, and foundations for ff (range index, compression, chunked processing).

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Install

install.packages('bit')

Monthly Downloads

864,981

Version

4.5.0.1

License

GPL-2 | GPL-3

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Repository

https://github.com/truecluster/bit

Maintainer

Jens Oehlschl�gel

Last Published

December 3rd, 2024

Functions in bit (4.5.0.1)

bit: Classes and methods for fast memory-efficient boolean selections

Concatenating booltype vectors

bit unique and duplicated

Diagnosing boolean types

Low-level sorting: bit sort

bit_sort_unique

bit sort unique

Methods for chunked range index

Create bitwhich vector (skewed boolean)

Position of first NA

Create empty bit vector

Function for chunked range index

Low-level sorting: counting sort

Copy atomic R vector

Cloning ff and ram objects

Get C length of a vector

Hybrid Index, C-coded utilities

Get range and number of NAs

Print method for bitwhich

Fast functions for sorted sets of integer

maxindex.default

Get maxindex (length of boolean vector) and poslength (number of 'selected' elements)

Testing for boolean types

Print method for bit

Remove zeros and get range and number of NAs

Test for NA in bit and bitwhich

Attribute setting by reference

Check existence of integers in table

bitwhich_representation

Diagnose representation of bitwhich

Low-level sorting: threeway quicksort

Prepare for sorting and get range, number of NAs and unsortedness

Reverse atomic vector

Str method for bitwhich

Low-level sorting: binary quicksort

Getting and setting length of bit, bitwhich and ri objects

Str method for bit

still.identical

Test for C-level identity of two atomic vectors

Symmetric set complement

Reversing bit and bitwhich vectors

Replicating bit and bitwhich vectors

Virtual recycling

Boolean operators and functions

Hybrid Index, rle-pack utilities

Vectorized Sequences

Attribute removal

as.character.bit

Coerce bit to character

as.booltype.default

Coerce to booltype (generic)

Coercing to bit

as.character.bitwhich

Coerce bitwhich to character

bit range difference

bit set operations

Summaries of boolean vectors

Generics related to cache access

Coercion to (positive) integer positions

CoercionToStandard

Coercion from bit, bitwhich, which and ri to logical, integer, double

Balanced Batch sizes

Extract or replace part of an boolean vector

physical.default

Physical and virtual attributes

as.bitwhich.NULL

Coercing to bitwhich

Initializing bit masks

Generics for in-RAM sorting and ordering