multiple-line 'expression' of if-statement not supported?

[xiangd...@gmail.com]

Hi all,

Wondering if the 'expression' part of an if-statement should be in one line only, given the following case, 'go tool compile' will report a syntax error

Enter code here...
package p

func cf1() int {

        return 0

}

func cf2() int {

        return 10

}

func f() {

        if cf2() - 1

                < cf1() {

                println("tested")

        }

}

ss.go:13:3: syntax error: unexpected <, expecting expression

Guess there might be syntax specification rules but I failed to find out. 

Thanks a lot.

[Ian Lance Taylor]

It's because of automatic semicolon insertion. You need to put the
"<" at the end of the "if" line, not at the start of the next line.
See https://golang.org/ref/spec#Semicolons .

Ian

[xiangd...@gmail.com]

Thanks a lot, Ian, it works now.

On Thursday, June 11, 2020 at 2:17:23 PM UTC+8, Ian Lance Taylor wrote: