View Source Re.Chars (re v1.0.1)
Character types definitions for Re.
The module defines constants that match a specific set of characters, like "all letters", "all digits", "anything except whitespace", and so on.
Link to this section Summary
Functions
Matches letters and digits.
Matches any letters.
Match any ASCII symbol (code points from 0 to 127).
Match decimal digit.
Matches hexadecimal digits.
Match any horizontal whitespace symbol.
Match any Latin-1 symbol (code points from 0 to 255).
Matches lowercase letters.
Match any whitespace symbol like space, tab, unicode spaces etc.
Matches uppercase letters.
Match any vertical whitespace symbol.
Match any word symbol like letters, numbers etc.
Match any symbol.
Match the beginning of each line.
Match the beginning of the whole string.
Match the end of each line.
Match the end of the whole string.
Match any symbol except digit.
Match any symbol except horizontal whitespaces.
Match any symbol except whitespace symbols.
Match any symbol except vertical whitespaces.
Match any symbol except word symbols (letters, numbers etc).
Matches when not at a word boundary.
Match only space and nothing else.
Match the tab symbol and nothing else.
Matches at a word boundary.
Link to this section Types
@opaque re_ast()
internal Re representation of regular expressions.
Link to this section Functions
@spec any_alnum() :: re_ast()
Matches letters and digits.
PCRE: [[:alnum:]].
@spec any_alpha() :: re_ast()
Matches any letters.
PCRE: [[:alpha:]].
@spec any_ascii() :: re_ast()
Match any ASCII symbol (code points from 0 to 127).
PCRE: [\\0-\x7f].
examples
Examples
iex> "a" =~ Re.compile(Re.Chars.any_ascii)
true
iex> "\x50" =~ Re.compile(Re.Chars.any_ascii)
true
iex> "\x90" =~ Re.compile(Re.Chars.any_ascii)
false@spec any_digit() :: re_ast()
Match decimal digit.
PCRE: \d.
@spec any_hex() :: re_ast()
Matches hexadecimal digits.
PCRE: [[:hex:]].
@spec any_hspace() :: re_ast()
Match any horizontal whitespace symbol.
PCRE: \h.
@spec any_latin1() :: re_ast()
Match any Latin-1 symbol (code points from 0 to 255).
PCRE: [\\0-\xff].
@spec any_lower() :: re_ast()
Matches lowercase letters.
PCRE: [[:lower:]].
@spec any_space() :: re_ast()
Match any whitespace symbol like space, tab, unicode spaces etc.
PCRE: \s.
@spec any_upper() :: re_ast()
Matches uppercase letters.
PCRE: [[:upper:]].
@spec any_vspace() :: re_ast()
Match any vertical whitespace symbol.
PCRE: \v.
@spec any_word() :: re_ast()
Match any word symbol like letters, numbers etc.
PCRE: \w.
@spec anything() :: re_ast()
Match any symbol.
By default, doesn't match newline.
PCRE: .
examples
Examples
iex> "a" =~ Re.compile(Re.Chars.anything)
true
iex> "?" =~ Re.compile(Re.Chars.anything)
true@spec beginning_of_line() :: re_ast()
Match the beginning of each line.
PCRE: ^
@spec beginning_of_string() :: re_ast()
Match the beginning of the whole string.
PCRE: \A
@spec end_of_line() :: re_ast()
Match the end of each line.
PCRE: $
@spec end_of_string() :: re_ast()
Match the end of the whole string.
PCRE: \z
@spec not_digit() :: re_ast()
Match any symbol except digit.
PCRE: \D.
@spec not_hspace() :: re_ast()
Match any symbol except horizontal whitespaces.
PCRE: \H.
@spec not_space() :: re_ast()
Match any symbol except whitespace symbols.
PCRE: \S.
@spec not_vspace() :: re_ast()
Match any symbol except vertical whitespaces.
PCRE: \V.
@spec not_word() :: re_ast()
Match any symbol except word symbols (letters, numbers etc).
PCRE: \W.
@spec not_word_boundary() :: re_ast()
Matches when not at a word boundary.
In PCRE, it's called "simple assertion" because it doesn't consume any symbols.
PCRE: \B.
@spec space() :: re_ast()
Match only space and nothing else.
PCRE: .
@spec tab() :: re_ast()
Match the tab symbol and nothing else.
PCRE: \t.
@spec word_boundary() :: re_ast()
Matches at a word boundary.
In PCRE, it's called "simple assertion" because it doesn't consume any symbols.
PCRE: \b.