Function reference • stringr

Pattern matching

String

str_count(): Count number of matches

str_detect(): Detect the presence/absence of a match

str_escape(): Escape regular expression metacharacters

str_extract() str_extract_all(): Extract the complete match

str_locate() str_locate_all(): Find location of match

str_match() str_match_all(): Extract components (capturing groups) from a match

str_replace() str_replace_all(): Replace matches with new text

str_remove() str_remove_all(): Remove matched patterns

str_split() str_split_1() str_split_fixed() str_split_i(): Split up a string into pieces

str_starts() str_ends(): Detect the presence/absence of a match at the start/end

fixed() coll() regex() boundary(): Control matching behaviour with modifier functions

Vector

Unlike other pattern matching functions, these functions operate on the original character vector, not the individual matches.

str_subset(): Find matching elements

str_which(): Find matching indices

Combining strings

str_c(): Join multiple strings into one string

str_flatten() str_flatten_comma(): Flatten a string

str_glue() str_glue_data(): Interpolation with glue

Character based

str_dup(): Duplicate a string

str_length() str_width(): Compute the length/width

str_pad(): Pad a string to minimum width

str_sub() `str_sub<-`() str_sub_all(): Get and set substrings using their positions

str_trim() str_squish(): Remove whitespace

str_trunc(): Truncate a string to maximum width

str_wrap(): Wrap words into nicely formatted paragraphs

Locale aware

str_order() str_rank() str_sort(): Order, rank, or sort a character vector

str_equal(): Determine if two strings are equivalent

str_to_upper() str_to_lower() str_to_title() str_to_sentence(): Convert string to upper case, lower case, title case, or sentence case

str_unique(): Remove duplicated strings

Other helpers

invert_match(): Switch location of matches to location of non-matches

str_conv(): Specify the encoding of a string

str_like(): Detect a pattern in the same way as SQL's LIKE operator

str_replace_na(): Turn NA into "NA"

str_view(): View strings and matches

word(): Extract words from a sentence

Bundled data

sentences fruit words: Sample character vectors for practicing string manipulations