Golang惯用方式从多行字符串中删除空白行

Question

If I have a multi line string like

this is a line

this is another line

what is the best way to remove the empty line? I could make it work by splitting, iterating, and doing a condition check, but is there a better way?

Answer 1

Assumming that you want to have the same string with empty lines removed as an output, I would use regular expressions:

import (
    "fmt"
    "regexp"
)

func main() {

    var s = `line 1
line 2

line 3`

    regex, err := regexp.Compile("

")
    if err != nil {
        return
    }
    s = regex.ReplaceAllString(s, "
")

    fmt.Println(s)
}