Char

A Char represents a Unicode code point. It occupies 32 bits.

It is created by enclosing an UTF-8 character in single quotes.

'a'
'z'
'0'
'_'
'あ'

You can use a backslash to denote some special characters:

'\'' # single quote
'\\' # backslash
'\e' # escape
'\f' # form feed
'\n' # newline
'\r' # carriage return
'\t' # tab
'\v' # vertical tab

You can use a backslash followed by at most three digits to denote a code point written in octal:

'\101' # == 'A'
'\123' # == 'S'
'\12'  # == '\n'
'\1'   # code point 1

You can use a backslash followed by an u and four hexadecimal characters to denote a unicode codepoint written:

'\u0041' # == 'A'

Or you can use curly braces and specify up to six hexadecimal numbers (0 to 10FFFF):

'\u{41}'    # == 'A'
'\u{1F52E}' # == '🔮'