Description Usage Arguments Value Constraints See Also Examples
Match pattern
in each element of x
1 2 |
pattern |
string to search for |
x |
FLVector of characters or R vector where matches are sought |
ignore.case |
logical indicating case-sensitivity. Currently always FALSE for FLVectors |
perl |
logical. Should perl-compatible regexps be used? Always FALSE for FLVectors |
value |
if TRUE value of element is returned rather than indices. |
fixed |
logical. If TRUE, pattern is a string to be matched as is. For FLVectors, regualar expressions are not supported |
useBytes |
If TRUE the matching is done byte-by-byte rather than character-by-character. Always FALSE for FLVector |
invert |
If TRUE return indices or values for elements that do not match. |
FLVector or R vector with indices or values where match is found
row FLVectors are not supported currently.
grep
for R function reference implementation.
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