grep: Pattern Matching and Replacement

In Bioconductor/BiocGenerics: S4 generic functions used in Bioconductor

Pattern Matching and Replacement

Description

Search for matches to argument 'pattern' within each element of a character vector.

NOTE: This man page is for the grep and grepl S4 generic functions defined in the BiocGenerics package. See ?base::grep for the default methods (defined in the base package). Bioconductor packages can define specific methods for objects not supported by the default method.

Usage

grep(pattern, x, ignore.case = FALSE, perl = FALSE, value = FALSE,
          fixed = FALSE, useBytes = FALSE, invert = FALSE)
grepl(pattern, x, ignore.case = FALSE, perl = FALSE,
          fixed = FALSE, useBytes = FALSE)

Arguments

pattern	The pattern for searching in x, such as a regular expression.
x	The character vector (in the general sense) to search.
ignore.case, perl, value, fixed, useBytes, invert	See ?base::grep for a description of these arguments.

Value

See ?base::grep for the value returned by the default method.

Specific methods defined in Bioconductor packages should behave as consistently as possible with the default method.

See Also

• base::grep for the default grep and grepl methods.

• showMethods for displaying a summary of the methods defined for a given generic function.

• selectMethod for getting the definition of a specific method.

• BiocGenerics for a summary of all the generics defined in the BiocGenerics package.

Examples

grep  # note the dispatch on 'pattern' and 'x' args only
showMethods("grep")
selectMethod("grep", "ANY")  # the default method

Bioconductor/BiocGenerics documentation built on Nov. 17, 2024, 6:52 p.m.