Golang : Extract sub-strings

To extract sub-strings from a string in Golang, it can be done by determining a common delimiter and tokenize each sub-string based on the delimiter or telling Golang to extract the sub-strings based on the character position.

For example :

 package main

 import (
 "fmt"
 "strings"
 )

 func main() {
 str := "this is a string"

 // extract each word from str
 parts := strings.SplitN(str, " ", 4)

 fmt.Println(parts[0])

 fmt.Println(parts[1])

 fmt.Println(parts[2])

 fmt.Println(parts[3])

 // now we want to extract based on number of characters/positions

 subStr1 := str[:4] // this. REMEMBER start from zero....

 fmt.Println(subStr1)

 subStr2 := str[5:7] // is

 fmt.Println(subStr2)

 subStr3 := str[8:9] // a

 fmt.Println(subStr3)

 subStr4 := str[10:] // string

 fmt.Println(subStr4)

 subStr5 := str[2:12] // string

 fmt.Println(subStr5)

 }