Trait unicode_casefold::UnicodeCaseFold [−] [src]

pub trait UnicodeCaseFold<I: Iterator<Item = char>>: Sized {
    fn case_fold_with(self, _: Variant, _: Locale) -> CaseFold<I>;

    fn case_fold(self) -> CaseFold<I> { ... }
}

Methods for case folding text.

Required Methods

Returns an iterator over the case folded characters of self.

Parameters

The Variant can be either:

  • Variant::Full (recommended), which may expand to a longer string. For example, the full case folded version of ß (one character) is ss (two characters).

  • Variant::Simple, a simpler variant which always expands to a string with the same number of characters. This is more efficient, but less complete.

The Locale can be either:

  • Locale::NonTurkic (default), which maps I to i.

  • Locale::Turkic, which maps I to ı (dotless i), as is the case in Turkic languages.

Examples

let name = "Inigo Montoya";
let turkic = name.case_fold_with(Variant::Full, Locale::Turkic).collect::<String>();
let non_turkic = name.case_fold_with(Variant::Full, Locale::NonTurkic).collect::<String>();
assert_eq!(turkic, "ınigo montoya");  // note the dotless i
assert_eq!(non_turkic, "inigo montoya");

Provided Methods

Returns an iterator over the case folded characters of self.

This is a convenient shorthand for .case_fold(Variant::Full, Locale::NonTurkic).

Examples

let s = "Alan Turing".case_fold().collect::<String>();
assert_eq!(s, "alan turing");

Implementors