Operator precedence list in Go language, which operator has the highest precedence?

There are many operators in the Go language, which are often used to perform various mathematical and logical operations. Each operator has its own precedence, which determines the order in which they are evaluated in an expression. This article will introduce you to the priority ranking of operators in the Go language and find out the operator with the highest priority.

The operators in Go language are as follows in order from high to low precedence:

1. Brackets: (). Parentheses are used to change the precedence order of operators. Parentheses in expressions are evaluated first.
2. Unary operators: , -, !. Unary operators are operators that only process one operand. They have lower precedence than parentheses, but higher than other operators.
3. Arithmetic operators: *, /, %. These operators are used to perform multiplication, division, and modulo operations. They have lower precedence than parentheses and unary operators.
4. Arithmetic operators: , -. These operators are used to perform addition and subtraction operations. They have lower precedence than the multiplication and division operators.
5. Bitwise operators: >. These operators are used to perform bitwise operations. They have lower precedence than arithmetic operators.
6. Bitwise AND operator: &. This operator is used to perform bitwise AND operations. It has lower precedence than bitwise operators.
7. Bitwise OR operator: |. This operator is used to perform bitwise OR operations. It has lower precedence than the bitwise AND operator.
8. Bitwise XOR operator: ^. This operator is used to perform bitwise XOR operations. It has lower precedence than the bitwise OR operator.
9. Logical Operators:&&. This operator is used to perform logical AND operations. It has lower precedence than the bitwise XOR operator.
10. Logical operator: ||. This operator is used to perform logical OR operations. It has lower precedence than the logical AND operator.
11. Relational operators: ==, !=, , >=. These operators are used to perform comparison operations. They have lower precedence than logical operators.
12. Assignment operators: =, =, -=, *=, /=, %=, >=, &=, |=, ^=. These operators are used to perform variable assignment operations. They have lower precedence than relational operators.
13. Operators: , --; =, -=, etc. These operators are used to perform increment and decrement operations, as well as compound assignment operations.

Ranking at the top of the Go language operator precedence rankings are the parentheses operators, which have the highest priority because parentheses provide the clearest order of calculations. Expressions enclosed in parentheses are evaluated before other operators.

Operator precedence in Go language is very important when writing code. If operator precedence is unclear, expressions may be evaluated in the wrong order, resulting in unexpected results.

The following is a code example that demonstrates the impact of operator precedence:

package main

import "fmt"

func main() {
    a := 1
    b := 2
    c := 3

    result := a + b*c // 先乘法后加法
    fmt.Println(result) // 输出：7

    result = (a + b) * c // 先加法后乘法
    fmt.Println(result) // 输出：9
}

In the above example, the expressions a b*c and (a b ) * The results of c are different. This is because the multiplication operator has a higher priority than the addition operator, so the first expression performs multiplication first, and then addition; while the second expression uses parentheses, changing the priority order of the operators, and executes it first The addition was performed, and then the multiplication was performed. The priority of

operators is fixed in Go language. We can write code according to this priority ranking and change their calculation order through parentheses to achieve the results we want. In actual programming, we can add parentheses as needed to clarify the calculation order of expressions, thereby avoiding unnecessary errors.

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