MistOperators, Macros & Closures
Binary, prefix, and postfix operators, macro calls, and closure expressions.
Binary Operators
| Operator | Description |
|---|---|
+ | Addition |
- | Subtraction |
* | Multiplication |
/ | Division |
% | Modulus |
== | Equality |
!= | Inequality |
< | Less than |
> | Greater than |
<= | Less or equal |
>= | Greater or equal |
&& | Logical AND |
|| | Logical OR |
& | Bitwise AND |
| | Bitwise OR |
^ | Bitwise XOR |
<< | Left shift |
>> | Right shift |
= | Assignment |
+= | Add assign |
-= | Subtract assign |
*= | Multiply assign |
/= | Divide assign |
%= | Modulus assign |
&= | Bitwise AND assign |
|= | Bitwise OR assign |
^= | Bitwise XOR assign |
<<= | Left shift assign |
>>= | Right shift assign |
.. | Range (exclusive) |
..= | Range (inclusive) |
-> | Pointer write |
Prefix Operators
| Operator | Description |
|---|---|
* | Dereference |
& | Reference |
&mut | Mutable reference |
! | Logical NOT |
- | Numeric negation |
Postfix Operators
| Operator | Description |
|---|---|
.field | Field access |
.0 | Tuple field access |
() | Function call |
[] | Index |
{ f: v } | Struct literal |
as Type | Type cast |
? | Try (error prop) |
++ | Increment |
-- | Decrement |
!() | Macro call (paren) |
![] | Macro call (bracket) |
!{} | Macro call (brace) |
Macros
Mist reuses Rust's macro system directly:
println!("hello");
assert_eq!(a, b);
vec![1, 2, 3];Macro calls use ! followed by parentheses, brackets, or braces.
Closures
let add = (a, b) => a + b;
let result = add(2, 3); // 5
f64 fn() square = (x) => x * x;Closures can have explicit return types:
let transform = i32 (x) => {
x * 2
};