Using the regex to get particular value

[Gowtham_Girithar]

Hi,
String 1 = 'have a nice day %1"
In the above string, I have %1 Which will be determined based on input string and return the value.
If the input string is “have a nice day Gowtham”,the output will be Gowtham.
Can anyone help with regex to get like this?
Thanks in advance

[NobbZ (Norbert Melzer)]

Do you really need help to construct a regular expression that matches on a statically known prefix and the remainder of the string?

Statically known prefix (.*)

This should be enough of hints to construct the real expression on your own.

Though perhaps you do want fmt.Scan* instead?

[Gowtham_Girithar]

Hi Norbert,

Thank you
Yes, with regex I always get full string like below.But my requirement is to get only that word which will fit in .*

import (
   "regexp"
)

func main() {

   regex:=`have a nice day (.*)`
   str:=`have a nice day Gowtham`
   var rgx =regexp.MustCompile(regex)
   println(rgx.FindString(str)) //have a nice day Gowtham
   println(rgx.MatchString(str))

}

But I want only Gowtham and not “have a nice day Gowtham”
I’m not able to see any inbuilt method which will return me such results.

we have in Java as below,

if (matcher.find()) {
            System.out.println("Yes found : " + matcher.group(1)); // it will print only Gowtham
        }

I have found out to use below code in golang and get the index of 1 for getting the exact value. Is there any other way?

rgx.FindStringSubmatch(str)

[NobbZ (Norbert Melzer)]

So you do not need help with building the regular expression, but with using it?

You should be able to use regexp.(*Regexp).FindString() or regexp.(*Regexp).FindStringSubmatch().

[Gowtham_Girithar]

Yes.