Operators are symbols that tell the compiler to perform a specific mathematical or logical operation. Go’s built-in symbols include
- Arithmetic operator
- Relational operator
- Logical operator
- An operator
- The assignment operator
Take logical operators as an example, as shown in the following table
| Operation type | Go Operator |
|---|---|
| AND | && |
| OR | |
| NOT |
Take bitwise operators, as shown in the following table
| Operation type | Go Operator | Sample |
|---|---|---|
| AND | & | p & q |
| OR | | | p | q |
| XOR | ^ | p ^ q |
| NOT | ~ | ~p |
| Left shift | << | p << 1 |
| Right shift | >> | p >> 2 |
The assignment operator = + = – = * = / = % = < < = > > = ^ = | =
Other operators
| Go Operator | Note |
|---|---|
| & | return the address of a variable |
| * | pointer to a variable |
Precedence of the operator precedence Determines the grouping of an expression and affects its solution. The order from top to bottom is shown below
| Category | Operator | Associativity |
|---|---|---|
| Postfix | () [] ->. ++ – | Left to right |
| Unary | + -! ~ ++ – – (type)* & sizeof | Right to left |
| Multiplicative | * / % | Left to right |
| Additive | + – | Left to right |
| Shift | << >> | Left to right |
| Relational | < < = > > = | Left to right |
| Equality | = =! = | Left to right |
| Bitwise AND | & | Left to right |
| Bitwise XOR | ^ | Left to right |
| Bitwise OR | | | Left to right |
| Logical AND | && | Left to right |
| Logical OR | ||
| Assignment | = += -= *= /= %=>>= <<= &= ^= | = |
| Comma | . | Left to right |