# 1.2.0[−][src]Module std::char

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

DecodeUtf16 | An iterator that decodes UTF-16 encoded code points from an iterator of `u16`s.
DecodeUtf16Error | An error that can be returned when decoding UTF-16 code points.
EscapeDebug | An iterator that yields the literal escape code of a `char`.
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.
ParseCharError | An error which can be returned when parsing a char.
ToLowercase | Returns an iterator that yields the lowercase equivalent of a `char`.
ToUppercase | Returns an iterator that yields the uppercase equivalent of a `char`.
CharTryFromError | [ Experimental ] The error type returned when a conversion from u32 to char fails.
UnicodeVersion | [ Experimental ] Represents a Unicode Version.

## Constants

MAX | The highest valid code point a `char` can have.
REPLACEMENT_CHARACTER | `U+FFFD REPLACEMENT CHARACTER` (�) is used in Unicode to represent a decoding error.
UNICODE_VERSION | [ Experimental ] The version of Unicode that the Unicode parts of `char` and `str` methods are based on.

## Functions

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

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