pub trait AsciiExt {
type Owned;
fn is_ascii(&self) -> bool;
fn to_ascii_uppercase(&self) -> Self::Owned;
fn to_ascii_lowercase(&self) -> Self::Owned;
fn eq_ignore_ascii_case(&self, other: &Self) -> bool;
fn make_ascii_uppercase(&mut self);
fn make_ascii_lowercase(&mut self);
}
Extension methods for ASCII-subset only operations.
Be aware that operations on seemingly non-ASCII characters can sometimes have unexpected results. Consider this example:
use std::ascii::AsciiExt;
assert_eq!(AsciiExt::to_ascii_uppercase("café"), "CAFÉ");
assert_eq!(AsciiExt::to_ascii_uppercase("café"), "CAFé");In the first example, the lowercased string is represented "cafe\u{301}" (the last character is an acute accent combining character). Unlike the other characters in the string, the combining character will not get mapped to an uppercase variant, resulting in "CAFE\u{301}". In the second example, the lowercased string is represented "caf\u{e9}" (the last character is a single Unicode character representing an 'e' with an acute accent). Since the last character is defined outside the scope of ASCII, it will not get mapped to an uppercase variant, resulting in "CAF\u{e9}".
type OwnedContainer type for copied ASCII characters.
fn is_ascii(&self) -> boolChecks if the value is within the ASCII range.
This method is deprecated in favor of the identically-named inherent methods on u8, char, [u8] and str.
fn to_ascii_uppercase(&self) -> Self::OwnedMakes a copy of the value in its ASCII upper case equivalent.
ASCII letters 'a' to 'z' are mapped to 'A' to 'Z', but non-ASCII letters are unchanged.
To uppercase the value in-place, use make_ascii_uppercase.
To uppercase ASCII characters in addition to non-ASCII characters, use str::to_uppercase.
This method is deprecated in favor of the identically-named inherent methods on u8, char, [u8] and str.
fn to_ascii_lowercase(&self) -> Self::OwnedMakes a copy of the value in its ASCII lower case equivalent.
ASCII letters 'A' to 'Z' are mapped to 'a' to 'z', but non-ASCII letters are unchanged.
To lowercase the value in-place, use make_ascii_lowercase.
To lowercase ASCII characters in addition to non-ASCII characters, use str::to_lowercase.
This method is deprecated in favor of the identically-named inherent methods on u8, char, [u8] and str.
fn eq_ignore_ascii_case(&self, other: &Self) -> boolChecks that two values are an ASCII case-insensitive match.
Same as to_ascii_lowercase(a) == to_ascii_lowercase(b), but without allocating and copying temporaries.
This method is deprecated in favor of the identically-named inherent methods on u8, char, [u8] and str.
fn make_ascii_uppercase(&mut self)1.9.0
Converts this type to its ASCII upper case equivalent in-place.
ASCII letters 'a' to 'z' are mapped to 'A' to 'Z', but non-ASCII letters are unchanged.
To return a new uppercased value without modifying the existing one, use to_ascii_uppercase.
This method is deprecated in favor of the identically-named inherent methods on u8, char, [u8] and str.
fn make_ascii_lowercase(&mut self)1.9.0
Converts this type to its ASCII lower case equivalent in-place.
ASCII letters 'A' to 'Z' are mapped to 'a' to 'z', but non-ASCII letters are unchanged.
To return a new lowercased value without modifying the existing one, use to_ascii_lowercase.
This method is deprecated in favor of the identically-named inherent methods on u8, char, [u8] and str.
impl AsciiExt for char[src]
type Owned = charfn is_ascii(&self) -> bool[src]
fn to_ascii_uppercase(&self) -> Self::Owned[src]
fn to_ascii_lowercase(&self) -> Self::Owned[src]
fn eq_ignore_ascii_case(&self, o: &Self) -> bool[src]
fn make_ascii_uppercase(&mut self)[src]
fn make_ascii_lowercase(&mut self)[src]
impl AsciiExt for [u8][src]
type Owned = Vec<u8>fn is_ascii(&self) -> bool[src]
fn to_ascii_uppercase(&self) -> Self::Owned[src]
fn to_ascii_lowercase(&self) -> Self::Owned[src]
fn eq_ignore_ascii_case(&self, o: &Self) -> bool[src]
fn make_ascii_uppercase(&mut self)[src]
fn make_ascii_lowercase(&mut self)[src]
impl AsciiExt for str[src]
type Owned = Stringfn is_ascii(&self) -> bool[src]
fn to_ascii_uppercase(&self) -> Self::Owned[src]
fn to_ascii_lowercase(&self) -> Self::Owned[src]
fn eq_ignore_ascii_case(&self, o: &Self) -> bool[src]
fn make_ascii_uppercase(&mut self)[src]
fn make_ascii_lowercase(&mut self)[src]
impl AsciiExt for u8[src]
type Owned = u8fn is_ascii(&self) -> bool[src]
fn to_ascii_uppercase(&self) -> Self::Owned[src]
fn to_ascii_lowercase(&self) -> Self::Owned[src]
fn eq_ignore_ascii_case(&self, o: &Self) -> bool[src]
fn make_ascii_uppercase(&mut self)[src]
fn make_ascii_lowercase(&mut self)[src]
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/ascii/trait.AsciiExt.html