std::unicode¶

Status: shipped

Unicode general-category predicates, casing, normalization, and segmentation.

Public items¶

Name	Kind	Description
is_letter	fn	True if r is in general-category group L.
is_digit	fn	True if r is a decimal digit (category Nd).
is_number	fn	True if r is any numeric (Nd|Nl|No).
is_space	fn	True if r is whitespace (Z* plus HT/LF/VT/FF/CR/NEL).
is_upper	fn	True if r is category Lu.
is_lower	fn	True if r is category Ll.
is_title	fn	True if r is category Lt.
is_punct	fn	True if r is in general-category group P.
is_symbol	fn	True if r is in general-category group S.
is_mark	fn	True if r is in general-category group M.
is_print	fn	True if r is printable (not Cc/Cf/Cs/Co/Cn).
is_graphic	fn	True if r is graphic (printable and not whitespace).
is_control	fn	True if r is category Cc.
is_assigned	fn	True if r is an assigned code point (not Cn).
to_upper	fn	Simple uppercase mapping for one rune.
to_lower	fn	Simple lowercase mapping for one rune.
to_title	fn	Simple titlecase mapping for one rune.
simple_fold	fn	Next rune in Unicode case-folding cycle.
combining_class	fn	Canonical combining class (0-254) for r.
to_upper_str	fn	Full uppercase mapping for a string (ss -> SS).
to_lower_str	fn	Full lowercase mapping for a string.
fold_case	fn	Simple case-folded comparison form for a string.
nfc	fn	Normalize a string to NFC (canonical composition).
nfd	fn	Normalize a string to NFD (canonical decomposition).
nfkc	fn	Normalize a string to NFKC (compat composition).
nfkd	fn	Normalize a string to NFKD (compat decomposition).
is_nfc	fn	True if a string is already in NFC.
is_nfd	fn	True if a string is already in NFD.
is_nfkc	fn	True if a string is already in NFKC.
is_nfkd	fn	True if a string is already in NFKD.
graphemes	fn	UAX #29 extended grapheme clusters of a string.
grapheme_count	fn	Number of UAX #29 grapheme clusters in a string.
words	fn	UAX #29 Unicode words in a string (skips punct/whitespace).
word_bounds	fn	UAX #29 word boundaries (includes punct + whitespace runs).
word_count	fn	Number of UAX #29 words in a string.
sentences	fn	UAX #29 Unicode sentences in a string.
sentence_count	fn	Number of UAX #29 sentences in a string.