Golang：删除除|以外的所有字符 来自字符串[关闭]

Question

I need to Remove all characters except "|" and whitespace from a string. I don't understand how to do this in Go. Please help.

The string could look like this:

|| ||| |||| || ||||| ||| || |||| hello |

and I need it to return this:

|| ||| |||| || ||||| ||| || ||||  |

Thanks in advance!

Answer 1

Use regex.ReplaceAllString:

ReplaceAllStringFunc returns a copy of src in which all matches of the Regexp have been replaced by the return value of function repl applied to the matched substring. The replacement returned by repl is substituted directly, without using Expand.

Example:

reg := regexp.MustCompile("[^| ]+")
origStr := "|| ||| |||| || ||||| ||| || |||| hello |"
replaceStr := reg.ReplaceAllString(origStr, "")

Docs: https://golang.org/pkg/regexp/#Regexp.ReplaceAllString

GoPlay: https://play.golang.org/p/rfZFuQMrNJ