Trait is_vowel::IsRomanceVowel [−][src]
Required methods
fn is_romance_vowel(self) -> bool
[src]
Return true
iff self
appears to be a “vowel” in a Romance language.
This function first decomposes its argument according to Unicode Normalization Form
KD to remove accents. It then considers
the argument to be a vowel if the first codepoint in the decomposition of self
is “a”,
“e”, “i”, “o”, “u” or their uppercase equivalents.
The author believes that this produces a reasonable approximation of “vowelness” for Romance languages. Counterexamples are welcome.
Examples
for c in "xÆ".chars() { assert!(!c.is_romance_vowel()); } for c in "aAáÁÅ".chars() { assert!(c.is_romance_vowel()); }
fn is_romance_vowel_including(self, extra_vowels: &HashSet<char>) -> bool
[src]
Behave as [is_romance_vowel
][is_romance_vowel], but also include the characters in
extra_vowels
as vowels.
Examples
let extra_vowels: HashSet<char> = "yYwW".chars().collect(); for c in "yW".chars() { assert!(c.is_romance_vowel_including(&extra_vowels)); }