![]() Grep(value = TRUE) returns a character vector containing the Is a long vector, when it will be a double vector. This will be an integer vector unless the input Of the elements of x that yielded a match (or not, for Grep(value = FALSE) returns a vector of the indices If NA, all elements in the resultĬorresponding to matches will be set to NA. ![]() If aĬharacter vector of length 2 or more is supplied, the first element Lower case and "\E" to end case conversion. "\L" to convert the rest of the replacement to upper or Perl = TRUE only, it can also contain "\U" or "\9" to parenthesized subexpressions of pattern. Forįixed = FALSE this can include backreferences "\1" to Regexec(pattern, text, ignore.case = FALSE, perl = FALSE,įixed = FALSE, useBytes = FALSE) ArgumentsĪ replacement for matched pattern in sub and Gregexpr(pattern, text, ignore.case = FALSE, perl = FALSE, Regexpr(pattern, text, ignore.case = FALSE, perl = FALSE, Gsub(pattern, replacement, x, ignore.case = FALSE, perl = FALSE, Sub(pattern, replacement, x, ignore.case = FALSE, perl = FALSE, Grepl(pattern, x, ignore.case = FALSE, perl = FALSE, Usage grep(pattern, x, ignore.case = FALSE, perl = FALSE, value = FALSE,įixed = FALSE, useBytes = FALSE, invert = FALSE) Sub and gsub perform replacement of the first and all Regexec search for matches to argument pattern withinĮach element of a character vector: they differ in the format of and Grep: Pattern Matching and Replacement Description
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