Understand the precedence order of commonly used operators in Go language

Familiar with the priority order of commonly used operators in Go language, you need specific code examples

In Go language, the priority of operators determines the order of each expression in the expression. The order of evaluation of operators. Understanding operator precedence is an important foundation for writing efficient and accurate code. This article will introduce the precedence order of commonly used operators in the Go language and provide specific code examples.

The priority order of operators in Go language from high to low is:

1. ( ): bracket operator. Expressions in parentheses are evaluated first.
2. ^: Exponential operator. For example, x^y represents x raised to the yth power.
3. *, /, %: Multiplication, division, and modulo operators. Represents multiplication, division and remainder.
4. , -: addition and subtraction operators. Represents addition and subtraction operations.
5. >: Bit operators. Used for left and right shift operations.
6. &: AND operator. It performs a bitwise AND operation.
7. &^: bit clearing operator. It clears the bit to zero.
8. |: Or operator. It performs a bitwise OR operation.
9. ^: XOR operator. It performs a bitwise XOR operation.
10. ==, !=: Equality and inequality operators. Used to compare whether two values ​​are equal.
11. , >=: comparison operators. Used to compare the size relationship between two values.
12. &&: Logical AND operator. It performs a logical AND operation.
13. ||: Logical OR operator. It performs a logical OR operation.
14. ?:: Conditional operator. It performs the first operation when the condition is met, otherwise it performs the second operation.
15. =, =, -=, *=, /=, %=, >=, &=, |=, ^=: Assignment operators. Used to assign a value to a variable.

Here are some specific code examples to illustrate operator precedence order:

1. Bracket operator:

a := (1 + 2) * 3
fmt.Println(a) // 输出9

2. Exponential operator:

b := 2 ^ 3
fmt.Println(b) // 输出8

3. Multiplication, division, and modulus operators:

c := 10 / 3
d := 10 % 3
fmt.Println(c, d) // 输出3 1

4. Addition and subtraction operators:

e := 5 + 2
f := 5 - 2
fmt.Println(e, f) // 输出7 3

5. Bitwise operators:

g := 3 << 2 // 左移2位，等于12
h := 8 >> 2 // 右移2位，等于2
fmt.Println(g, h) // 输出12 2

6. And, bit clear, or, XOR operators:

i := 5 & 3
j := 5 &^ 3
k := 5 | 3
l := 5 ^ 3
fmt.Println(i, j, k, l) // 输出1 4 7 6

7. Equality and inequality operators:

m := 5 == 5
n := 5 != 5
fmt.Println(m, n) // 输出true false

8. Comparison operators:

o := 5 < 3
p := 5 <= 5
q := 5 > 3
r := 5 >= 5
fmt.Println(o, p, q, r) // 输出false true true true

9. Logical AND, logical OR operators:

s := true && false
t := true || false
fmt.Println(s, t) // 输出false true

10. Conditional operator:

u := 5 > 3 ? "大于" : "小于"
fmt.Println(u) // 输出大于

11. Assignment operator:

v := 5
v += 3
w := 5 * 2
w /= 2
fmt.Println(v, w) // 输出8 5

By learning and becoming familiar with the precedence order of operators , we are able to write code more accurately and understand the order in which expressions are evaluated, thereby improving the efficiency and readability of our programs. Mastering the knowledge of operator precedence is a basic skill that every Go language developer should have.

The above is the detailed content of Understand the precedence order of commonly used operators in Go language. For more information, please follow other related articles on the PHP Chinese website!