Description Usage Arguments Details Value Constraints See Also Examples
Match pattern
in each element of text
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pattern |
string to search for |
text |
FLVector of characters or R vector to be searched. 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 |
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 |
startpos |
integer(numeric) specifying starting position for each search |
The DB Lytix function called is FLInstr.This function returns the position of the first occurrence of one string within another starting from the search position indicated.
FLVector with position of first match or -1 for no match or R Vector
row FLVectors are not supported currently.
regexpr
for R function reference implementation.
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