| Operator | Description | Example |
|---|
== | Equality | x == y |
!= | Inequality | x != y |
< | Less than | x < y |
<= | Less than or equal | x <= y |
> | Greater than | x > y |
>= | Greater than or equal | x >= y |
&& | Logical AND | x && y |
|| | Logical OR | x || y |
-> | Implication | x -> y |
// | Set update/merge | x // y |
+ | Addition | x + y |
- | Subtraction | x - y |
* | Multiplication | x * y |
/ | Division | x / y |
++ | List/string concatenation | x ++ y |
# Nix source
x + y
# AST
{
"tag": "Binary",
"op": "+",
"left": { "tag": "Sym", "contents": "x" },
"right": { "tag": "Sym", "contents": "y" }
}
| Operator | Description | Example |
|---|
- | Numeric negation | -x |
! | Logical NOT | !x |
# Nix source
!x
# AST
{
"tag": "Unary",
"op": "!",
"arg": { "tag": "Sym", "contents": "x" }
}
| Operation | nix-ast node |
|---|
| Function application | App |
| Attribute selection | Select |
| Has attribute | HasAttr |
syntax.mkBinary "+" (syntax.mkSym "x") (syntax.mkSym "y")
syntax.mkUnary "!" (syntax.mkSym "x")
syntax.mkBinary "==" (syntax.mkInt 1) (syntax.mkInt 1)
syntax.mkBinary "//" (syntax.mkSym "a") (syntax.mkSym "b")
syntax.mkBinary "++" (syntax.mkSym "xs") (syntax.mkSym "ys")