Revealing the Go language operator priority and revealing the key highest priority

Go language operator priority analysis, revealing what the most important priority is, requires specific code examples

When we use Go language for programming, operations Talisman is an inevitable part. Knowing the precedence of operators is key to understanding and using them correctly. In this article, we will analyze the precedence of operators in Go language and reveal what the most important precedence is.

First, let us review the types of Go language operators. Operators in Go language can be divided into the following categories:

1. Arithmetic operators: including addition ( ), subtraction (-), multiplication (*), division (/), remainder (%) wait.
2. Relational operators: including equal to (==), not equal to (!=), greater than (>), less than (=), less than or equal to (
3. Logical operators: including AND (&&), OR (||), NOT (!), etc.
4. Bitwise operators: including bitwise AND (&), bitwise OR (|), bitwise XOR (^), bitwise negation (~), left shift (>) etc.
5. Assignment operators: including simple assignment (=), additive assignment (=), subtractive assignment (-=), etc.

Next, let’s look at some specific code examples to parse operator precedence.

Example 1:

a := 2 + 3*4
fmt.Println(a)

In this example, we use the addition operator ( ) and the multiplication operator (). According to the operator priority rules of the Go language, the multiplication operator has a higher priority than the addition operator, so 34 is calculated first, and then 2 is added to get the result 14.

Example 2:

b := 10 > 5 && 20 < 30
fmt.Println(b)

In this example, we use relational operators (>, <) and logical operators (&&). According to the operator precedence rules of the Go language, relational operators have higher precedence than logical operators. So first calculate the two relational expressions 10>5 and 20<30, and then use the logical operator && to connect the results. The final result is true.

Example 3:

c := ^5 & 7
fmt.Println(c)

In this example, we use bitwise operators (^, &). According to the operator precedence rules of the Go language, bitwise operators have lower precedence than arithmetic operators, but higher than logical operators. So first calculate ^5 (bitwise negation), and then perform a bitwise AND operation with 7. The final result is 2.

The above examples show the precedence order of different operators. By understanding these precedence orders, we can write clearer and correct code.

So, what is the most important operator precedence? In Go language, the most important operator precedence is parentheses (()). Whether it's arithmetic, logical, or other operations, parentheses can be used in complex expressions to control the order of operations. Sometimes, even if using parentheses can get the correct result, for the sake of code readability and maintainability, it is better to add parentheses explicitly to express the intention more clearly.

d := (2 + 3) * 4
fmt.Println(d)

In the above example, we used parentheses to explicitly specify that the addition operation is to be calculated first and then multiplied by 4. The final result is 20.

To summarize, understanding operator precedence is key to writing efficient, correct code. In Go language, parentheses are the most important operator priority. You can add parentheses to clarify the order of operations. In actual programming, we should make full use of the precedence rules of operators to write clearer and more readable code.

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