- Count the number of matches in a string.
- Detect the presence or absence of a pattern in a string.
- Detect the presence or absence of a pattern at the beginning or end of a string.
- Join multiple strings into a single string.
- Flatten a string
- Pad a string.
- Wrap strings into nicely formatted paragraphs.
- Switch location of matches to location of non-matches.
- Specify the encoding of a string.
- Duplicate and concatenate strings within a character vector.
- The length of a string.
- Turn NA into "NA"
- Truncate a character string.
- Extract words from a sentence.