Module std::char [−] [src]

A character type.

The char type represents a single character. More specifically, since 'character' isn't a well-defined concept in Unicode, char is a 'Unicode scalar value', which is similar to, but not the same as, a 'Unicode code point'.

This module exists for technical reasons, the primary documentation for char is directly on the char primitive type itself.

This module is the home of the iterator implementations for the iterators implemented on char, as well as some useful constants and conversion functions that convert various types to char.

Structs

EscapeDefault	An iterator that yields the literal escape code of a `char`.
EscapeUnicode	Returns an iterator that yields the hexadecimal Unicode escape of a character, as `char`s.
ToLowercase	Returns an iterator that yields the lowercase equivalent of a `char`.
ToUppercase	Returns an iterator that yields the uppercase equivalent of a `char`.
DecodeUtf16	[Unstable] An iterator that decodes UTF-16 encoded code points from an iterator of `u16`s.

Constants

MAX	The highest valid code point a `char` can have.
REPLACEMENT_CHARACTER	[Unstable] `U+FFFD REPLACEMENT CHARACTER` (�) is used in Unicode to represent a decoding error. It can occur, for example, when giving ill-formed UTF-8 bytes to `String::from_utf8_lossy`.
UNICODE_VERSION	[Unstable] The version of Unicode that the unicode parts of `CharExt` and `UnicodeStrPrelude` traits are based on.

Functions

from_digit	Converts a digit in the given radix to a `char`.
from_u32	Converts a `u32` to a `char`.
from_u32_unchecked	Converts a `u32` to a `char`, ignoring validity.
decode_utf16	[Unstable] Create an iterator over the UTF-16 encoded code points in `iterable`, returning unpaired surrogates as `Err`s.