Golang's semicolons

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Semicolons

The formal grammar uses semicolons as Terminators in a number of ";" productions. Go programs omit most of these semicolons using the following the rules:

1. When the input was broken into tokens, a semicolon was automatically inserted into the token stream at the end of a Non-blan K Line if the line's final token is

   • An identifier
   • An integer, floating-point, imaginary, rune, or string literal
   • One of the keywords,, break continue fallthrough , orreturn
   • One of the operators and delimiters,,,, ++ -- ) ] or}

2. To allow complex statements to occupy a, a semicolon is omitted before a closing ")" or "}" .

To reflect idiomatic use, code examples in this document Elide semicolons using these rules.

That's clear:

The Golang compiler automatically inserts a semicolon (semicolons) at the end of a line:

1. Keyword keywords

2. Identifier identifiers

3. Direct Volume literals

4. Some operators: + +,--,),],}

Because of the initialization block {...} Use commas instead of semicolons, so you need to be careful that the compiler inserts semicolons in the block.

Like

var files = []struct {Name, Body string} {{"Readme.txt", "This archive contains some text files."}, {"Gopher.txt", "Gophe R Names:\ngeorge\ngeoffrey\ngonzo "}, {" Todo.txt "," Get Animal handling License. "}

}

The error occurs at compile time because the semicolon is automatically inserted after the last element, and the workaround:

1. Add a comma after the last element

var files = []struct {Name, Body string} {{"Readme.txt", "This archive contains some text files."}, {"Gopher.txt", "Gophe R Names:\ngeorge\ngeoffrey\ngonzo "}, {" Todo.txt "," Get Animal handling License. "},

}

2. Last "}" does not break line

var files = []struct {

Name, Body string} {"Readme.txt", "This archive contains some text files."}, {"Gopher.txt", "Gophernames:\ngeorge\ngeoffrey\ngonzo"}, {" Todo.txt "," Get Animal handling License. "}}