Operators

Table of contents

Operators are non-qualified calls.

`.’ is an operator.

Elixir operators always return a float.

Infix Expression 1 + 1

Prefix Expression +(1, 1)

Postfix Expression (1, 1)+

Operator	Name	What it does	Precedence
@	module attribute	defines compile constants too	Unary
.	dot		Left
^	pin	prevents the variable from changing
=	match
&	capture
::	type
! ^ not ~~~	strict and relaxed boolean “not”	Unary
. + -	positive/negative		Unary
/ * + -	division, multiplication, etc	arithmetic	Left
<> ++ – +++ — ..	list concatenation and subtraction		Right
in not in			Left
> «< »> «~ ~» <~ ~> <~> <	>
< > <= >=			Left
== != =~ === !==			Left
&& &&& and	strict and relaxed boolean “and”		Left

=			Right
&			Unary
->	arrow	used in anonymous functions and case statements
=> (valid only inside %{})	fat arrow	Defines key value-pairs	Right
	Cons	Splits list to head and tail	Right
::			Right
when			Right
<- \			Left
in and not in		membership
..	range creation
<>	binary concatenation
>	pipeline
=~	text-based match: the left side has the right side
=>	%{}
when	Guards
<-	for with
\	Default arguments	used to enter something if there is null value

Sorting Order

number < atom < reference < function < port < pid < tuple < map < list < bitstring

Possible operators:

|||
&&&
<<<
>>>
<<~
~>>
<~
~>
<~>
<|>
+++
---
~~~

This takes the result on the left, and passes it to the right.

"This is tough." |> String.upcase() |> String.split()
# ["THIS", "IS", "TOUGH."]

Attach ++ or Detach -- to a [list]

iex> [1, 2, 3] ++ [4, 5, 6]
[1, 2, 3, 4, 5, 6]

iex> [1, 2, 3] -- [2]
[1, 3]

Concatenate strings <>

iex> "inter" <> "nation" <> "alization"
"internationalization"

or and not

iex> true and true
true

iex> false or is_atom(:example)
true

|| gets the first one

&& gets the last one

! not

iex> 1 || true
1

iex> false || 11
11

iex> nil && 13
nil

iex> true && 17
17

not

iex> !true
false

iex> !1
false

iex> !nil
true

<= >= < >

== !=

iex> 1 == 1
true

iex> 1 != 2
true

iex> 1 < 2
true

Stricter: === !==

iex> 1 == 1.0
true

iex> 1 === 1.0
false