[string] multiline stirng and break line "\n"

[Guilherme Dalmarco]

Why bytes.IndexByte can not find '\n' in multiline string?

package main

import (
"bytes"
"fmt"
)

func main() {
t1 := []byte("TEST\n")
t2 := []byte(`TEST\n`)
t3 := byte('\n')

fmt.Println(t1)
fmt.Println(t2)
fmt.Println(t3)

fmt.Println(bytes.IndexByte(t1, t3))
fmt.Println(bytes.IndexByte(t2, t3))
}

[Jan Mercl]

Variable t2 has no newline in its value.

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[Axel Wagner]

Hey,

the `-quotes denote a "raw string literal". Escape-sequences in raw string literals are not interpreted - that's basically their purpose. So `t2` contains the literal two-byte sequence `\n`. You can see that in the output of `fmt.Println`, the newline is a 10, but t2 does not contain a 10, but a 92 ("\") and 110 ("n") instead.

If you want a raw string literal to contain an actual line-break, you have to put a line-break (not a line-break escape sequence) into it: https://play.golang.org/p/9DYfkVDk5RC

Hope that helps

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