1

gofmt command does not format the flower braces({}).

Code:

package main

import "fmt"

func main() 
{
    fmt.Printf("Hello, world\n")
}

Output of gofmt hello.go

hello.go:6:1: expected declaration, found '{' exit status 2

If i put the spaces anywhere it formats it properly. Does gofmt goes not format the braces?

Chirag Pahuja
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3 Answers3

6

You have to put the curly brace in the same line of function declaration otherwise your code won't compile because of this syntax error

Why are there braces but no semicolons? And why can't I put the opening brace on the next line?

Go uses brace brackets for statement grouping, a syntax familiar to programmers who have worked with any language in the C family. Semicolons, however, are for parsers, not for people, and we wanted to eliminate them as much as possible. To achieve this goal, Go borrows a trick from BCPL: the semicolons that separate statements are in the formal grammar but are injected automatically, without lookahead, by the lexer at the end of any line that could be the end of a statement. This works very well in practice but has the effect that it forces a brace style. For instance, the opening brace of a function cannot appear on a line by itself.

https://golang.org/doc/faq#semicolons

Community
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Alessio
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3

your code has syntax error: put the open curly brace in the same line with function declaration.
and A program fragment must be a syntactically valid for using gofmt:

see: https://golang.org/cmd/gofmt/ it says:

When gofmt reads from standard input, it accepts either a full Go program or a program fragment. A program fragment must be a syntactically valid declaration list, statement list, or expression. When formatting such a fragment, gofmt preserves leading indentation as well as leading and trailing spaces, so that individual sections of a Go program can be formatted by piping them through gofmt.

0

put the open curly brace in the same line with function declaration maybe you should add gofmt to your editor, it can avoid the problems of code format

Ansiz
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