Assertions: Suite of helper functions to test for types

In LiNk-NY/BiocUtils: General utility functions for developing Bioconductor packages

Suite of helper functions to test for types

Description

These are a group of helper functions that allow the developer to easily check for common data types in Bioconductor. These include logical, character, and numeric (& integer).

Usage

isTRUEorFALSE(x, na.ok = FALSE)

isScalarCharacter(x, na.ok = FALSE, zchar = FALSE)

isScalarInteger(x, na.ok = FALSE)

isScalarNumber(x, na.ok = FALSE, infinite.ok = FALSE)

isScalarLogical(x, na.ok = FALSE)

isCharacter(x, na.ok = FALSE, zchar = FALSE)

isZeroOneCharacter(x, na.ok = FALSE, zchar = FALSE)

Arguments

x	The input vector whose type is to be checked
na.ok	logical(1L) Whether it is acceptable to consider NA type inputs (default: FALSE).
zchar	logical(1L) Whether is is acceptable to consider 'zero' characters as defined by nchar, e.g., nchar("") (default: FALSE).
infinite.ok	logical(1L) Whether it is acceptable to consider infinite values as identified by is.finite (default: FALSE).

Details

Some functions such as isScalarCharacter allow exceptions to the type checks via the na.ok and zchar arguments. Others, for example isScalarNumber can permit Inf with the infinite.ok argument.

Value

Either TRUE or FALSE

Functions

• isTRUEorFALSE(): Is the input a single logical vector?

• isScalarCharacter(): Is the input a single character vector?

• isScalarInteger(): Is the input a single integer vector?

• isScalarNumber(): Is the input a single numeric vector?

• isScalarLogical(): Is the input a single logical vector?

• isCharacter(): Is the input a character vector?

• isZeroOneCharacter(): Is the input a character vector of zero or one length?

Author(s)

M. Morgan, H. Pagès

Examples

isTRUEorFALSE(TRUE)
isTRUEorFALSE(FALSE)
isTRUEorFALSE(NA, na.ok = TRUE)

isScalarCharacter(LETTERS)
isScalarCharacter("L")
isCharacter(LETTERS)
isCharacter(NA_character_, na.ok = TRUE)
isZeroOneCharacter("")
isZeroOneCharacter("", zchar = TRUE)

isScalarInteger(1L)
isScalarInteger(1)

isScalarNumber(1)
isScalarNumber(1:2)

LiNk-NY/BiocUtils documentation built on May 3, 2024, 8:27 a.m.