All symbols used in the elixir programming language

elixir_symbols.md

Symbols used in Elixir

A list of all not symbols and notations of elixir. Tried to have a base for comparision for other programming languages.

Operators

• === (strict)
• !== (strict)
• == (relaxed)
• !=
• &&
• ||
• !

• , >=, <, <=

• +, -, *, /, div, rem
• <> (binary concat)
• ++ (list concat)
• -- (list diff)

Types

• :foo (atom)
• {1, 2} (tple)
• [1, 2, 3] (list)
• [1 | [2, 3]]
• [a: 1, b: 2] (keyword list)
• << 65, 66 >> or "AB" (binary string)
• 1..9 (range)

Functions

• fn params [guard] -> body end
• function do params [guard] -> body end
• func.() (calling a anonymous function from a variable)
• &(&1, &2) (closure shortcut)
• def name(params) [guard] do expression end
• def name(params) [guard], do: expression
• parameter // 42 (default parameter)
• defp ... (private function)
• &module.function/arity
• defmodule ...
• require ...
• use ...
• import Module, only: foo, except: bar
• alias Module, as: M
• :erlang.function() (calling a erlang function)
• when [guard] (pattern matching guard)

List Comprehensions

• lc x inlist list, y inbits binary, x < y, do: ...
• bc ... inbits ..., guard, do: ...

Control flow

• something, do: ...
• else, rescue, try, ensure
• a |> b() (pipeline operator)
• if expr do ... else ... end
• condition do matcher -> expr end
• case expr do matcher -> expr end

Regex and Sigils

• %r{pattern]opts (regex)
• %type{content} (sigil)

Messages

• pid <- message (Sending message)
• receive do matcher -> expression after 42 -> expression end

Constants

• _MODULE_
• _FILE_
• _DIR_
• _ENV_
• _CALLER_

also:
^ : Use the pin operator ^ when you want to pattern match against an existing variable’s value rather than rebinding the variable
%{} : map
#{} in string : run

fun! : a function with error message
fun? : a boolean function
_ : default case
_foo : a variable not used
@proper : module attributes

| (vertical bar) used in map update short form: %{recipe | salt: "2tsp"}

@michaelteter You save my time, thanks

Your default parameter slashes (//) are backwards - should be \\

What about the "?-" symbol. Used here: https://github.com/zyro/elixir-uuid/blob/master/lib/uuid.ex#L492

? return codepoint https://elixir-lang.org/getting-started/binaries-strings-and-char-lists.html

@map_name %{ a: 1, b: 2} , what is @ symbol

@map_name %{ a: 1, b: 2} , what is @ symbol
Constants, as seen here: https://elixir-lang.org/getting-started/module-attributes.html#as-constants

Would be helpful to link to an explanation of &module.function/arity

Seems like this is a good reference https://elixir-lang.org/getting-started/modules-and-functions.html#function-capturing

Please how can remove characters from a string in elixir