Golang : Get first few and last few characters from string


Tags : golang string last-characters first-characters

Problem:

You need to find the last few or first few characters from a string. How to do that?

Solution:

In Golang, a string variable has an index that you can use to extract characters out. Kinda like a slice or array. All you need to do is to assign a new variable with the "extracted" characters based on given index position.

For example :

 package main

 import (
 "fmt"
 )

 func main() {

 str := "hello"

 lastChar := str[len(str)-1:]
 fmt.Println(lastChar) // gives "o"

 lastTwoChar := str[len(str)-2:]
 fmt.Println(lastTwoChar) // gives "lo"

 firstTwoChar := str[:2]
 fmt.Println(firstTwoChar) // gives "he"
 }

Happy coding!

  See also : Golang : How to check if a string starts or ends with certain characters or words?



Tags : golang string last-characters first-characters

By Adam Ng

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