Pattern Matching and Replacement
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.
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)pattern |
The pattern for searching in |
x |
The character vector (in the general sense) to search. |
ignore.case, perl, value, fixed, useBytes, invert |
See |
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.
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.
grep # note the dispatch on 'pattern' and 'x' args only
showMethods("grep")
selectMethod("grep", "ANY") # the default methodPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.