You are missing reading the doc. strings.Trim()
:
func Trim(s string, cutset string) string
Trim returns a slice of the string s with all leading and trailing Unicode code points contained in cutset removed.
The [
character in your input is not in a leading nor in a trailing position, it is in the middle, so strings.Trim()
– being well behavior – will not remove it.
Try strings.Replace()
instead:
s := "this[things]I would like to remove"
t := strings.Replace(s, "[", "", -1)
fmt.Printf("%s\n", t)
Output (try it on the Go Playground):
thisthings]I would like to remove
There is also a strings.ReplaceAll()
added in Go 1.12 (which is basically a “shorthand” for Replace(s, old, new, -1)
).