bit: booltype – R documentation

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booltype

Diagnosing boolean types

Description

Specific methods for booltype are required, where non-unary methods can combine multiple bollean types, particularly boolean binary operators.

Usage

booltype(x)

Arguments

`x`	an R object

Details

Function booltype returns the boolean type of its argument. There are currently six boolean types, booltypes is an ordered vector with the following ordinal levels

nobool: non-boolean types
logical: for representing any boolean data including NA
bit: for representing dense boolean data
bitwhich: for representing sparse (skewed) boolean data
which: for representing sparse boolean data with few TRUE
ri: range-indexing, for representing sparse boolean data with a single range of TRUE

Value

one scalar element of booltypes in case of 'nobool' it carries a name attribute with the data type.

Note

do not rely on the internal integer codes of these levels, we might add-in hi later

Examples

unname(booltypes)
str(booltypes)
sapply(list(double(),integer(),logical(),bit(),bitwhich(),as.which(),ri(1,2,3)), booltype)

bit

Classes and Methods for Fast Memory-Efficient Boolean Selections

v4.0.4

GPL-2 | GPL-3

Authors

Jens Oehlschlägel [aut, cre], Brian Ripley [ctb]

Initial release

2020-08-03