How to solve golang bracket newline error

Golang is an emerging programming language that has become increasingly popular in recent years but has also encountered some problems. One of them is that the use of golang brackets when breaking new lines can easily lead to compilation errors. This is because golang's syntax has strict restrictions on bracket wrapping, so you must pay attention when writing code.

The use of brackets in golang is very important. It is used to define functions, if statements, for loops, switch statements, etc. Using parentheses when wrapping new lines can lead to the following two common errors.

1. Syntax Error

golang has strict restrictions on the use of parentheses. Generally speaking, if you want a line break within the brackets, then you need to use brackets on both sides of the brackets, for example:

func main() {
    if (true &&
        false) {
        fmt.Println("true")
    }
}

This is the correct way to write it, otherwise if you only add a line break after the left bracket It will cause errors, for example:

func main() {
    if (true &&
    false) { // 如果将左括号置于换行符之后，将会得到语法错误
        fmt.Println("true")
    }
}

golang will prompt a syntax error when compiling, which is why you need to pay attention to the use of brackets.

2. Running errors

In addition to grammatical errors, improper use of brackets may also cause program running errors. For example, if you forget to use parentheses when wrapping newlines inside parentheses, golang will not be able to parse the code correctly, resulting in a runtime error. Here is an example:

func main() {
    if true 
    && false { // 如果使用 && 并将左括号置于换行符之后，则会导致编译时语法错误
        fmt.Println("true")
    }
}

When this code is compiled, golang will not be able to parse it correctly, so you will get the following error:

syntax error: unexpected newline, expecting expression or )

This kind of error seems small, but it may More serious errors can result from improper use of parentheses.

Summary

In golang, the use of brackets is very important. Improper use of brackets may cause syntax errors or runtime errors in the code. Therefore, you must be careful when writing golang code and pay attention to the use of brackets when breaking lines.

Finally, I hope this article can help you avoid errors caused by bracket wrapping and make your golang programming journey smoother!

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