'How to remove the last character of a string in Golang?

I want to remove the very last character of a string, but before I do so I want to check if the last character is a "+". How can this be done?

string go

Solution 1:^[1]

Based on the comment of @KarthikGR the following example was added:

package main

import (
    "fmt"
    "strings"
)

func main() {
    fmt.Println(strings.TrimSuffix("Foo++", "+"))
}

returns:

Foo+

No builtin way. But it's trivial to do manually.

s := "mystring+"
sz := len(s)

if sz > 0 && s[sz-1] == '+' {
    s = s[:sz-1]
}

@llazzaro

A simple UTF compliant string trimmer is

string([]rune(foo)[:len(foo)-1]))

So I'd go with

f2 := []rune(foo)
for f2[len(f2)-1] == '+'{
    f2 = f2[:len(f2)-1]
}
foo = string(f2)

I'm not sure why the other answers trimmed the way that they do, because they're trimming bytes.

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