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:
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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