Revealing the analysis of operator priority in Go language, what is the highest priority?

Analyze the operator priority in Go language and reveal what the highest priority is. Specific code examples are needed

In Go language, operators are used to perform various operations , such as arithmetic operations, logical operations and bit operations, etc. The precedence of an operator determines the order in which the operators are executed. Understanding operator precedence is critical to properly understanding how your code is executed. This article will analyze the common operator priorities in the Go language and reveal what the highest priority is.

First, let’s take a look at the order of common operator priorities in the Go language from high to low:

1. Brackets (())
2. Unigram Operators (-, ,!,^,*)
3. Multiplication and division operators (*,/,%)
4. Addition and subtraction operators (,-)
5. Bitwise shift operator (>)
6. Bitwise AND operator (&)
7. Bitwise XOR operator (^)
8. Bitwise OR operator (|)
9. Logical AND operator (&&)
10. Logical OR operator (||)
11. Comparison operator (==, != ,,>=)
12. Assignment operators (=, =,-=,*=,/=,%=,> ;=, &=, ^=, |=)
13. Comma operator (,)

As can be seen from the above list, brackets have the highest priority, and comma operations character has the lowest priority. This means that the expressions enclosed in parentheses are evaluated before other operators.

In addition to the above common operators, Go language also introduces some special operators, such as &&=, ||=, &^=, etc. The precedence of these special operators is the same as the corresponding operator with an equal sign appended to it.

The following uses specific code examples to demonstrate the application of operator precedence:

package main

import "fmt"

func main() {
    a := 10
    b := 5
    c := 2

    result := a + b * c
    fmt.Println(result)  // 20

    result = (a + b) * c
    fmt.Println(result)  // 30

    result = a << b & c
    fmt.Println(result)  // 0

    result = a < b || b > c
    fmt.Println(result)  // true

    result = a != b && b <= c
    fmt.Println(result)  // false
}

In the above code, we define three variables a, b and c, through different operators combination, obtained different results.

First, we used the addition operator and the multiplication operator. Since the multiplication operator has a higher priority than the addition operator, the multiplication operation is performed first, and then the addition operation is performed. Therefore, the results are 20 and 30.

Next, we used the bitwise shift operator and the bitwise AND operator. The shift operator has a higher priority than the bitwise AND operator, so the bitwise shift operation was performed first, and then the bitwise AND operator was performed. Operation. Therefore, the result is 0.

Finally, we used the logical OR operator and the logical AND operator. The logical OR operator has a lower priority than the logical AND operator, so the logical AND operation is performed first, and then the logical OR operation is performed. . Therefore, the results are true and false.

Through the above examples, we can clearly see the effects of different operator priorities, so that we can better understand the running process of the code.

In the Go language, understanding the precedence of operators is crucial to writing correct code. By judicious use of parentheses and a correct understanding of operator precedence, you can avoid unnecessary errors and make your code easier to read and understand.

During the development process, we should pay attention to the priority of operators and use parentheses reasonably to clearly specify the order of operations. This ensures that the code behaves as we expect and makes the code more readable and maintainable.

To summarize, the operator priorities in Go language from high to low are parentheses, unary operators, multiplication and division operators, addition and subtraction operators, bitwise shift operators, and bitwise AND operations. operator, bitwise XOR operator, bitwise OR operator, logical AND operator, logical OR operator, comparison operator, assignment operator and comma operator. Properly understanding and applying the precedence of these operators can lead to better writing of efficient and accurate code.

I hope this article will help you understand operator precedence in Go language, and provide you with some guidance and inspiration in daily Go language development.

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