Question

How to extract substring from string with regular expression in Go

Answer 1

package main 
  
import ( 
    "fmt"
    "regexp"
) 
  
func main() { 
    reg := regexp.MustCompile(`go.`) 
  
    fmt.Println(reg.FindAllString("go java python golang php", 2)) 
} 



/*
run:

[go  gol]

*/

 

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Answer 2

package main 
  
import ( 
    "fmt"
    "regexp"
) 
  
func main() { 
    reg := regexp.MustCompile(`go...`) 
  
    fmt.Println(reg.FindAllString("go java python golang php", 2)) 
} 



/*
run:

[go ja golan]

*/

 

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Answer 3

package main 
  
import ( 
    "fmt"
    "regexp"
) 
  
func main() { 
    reg := regexp.MustCompile(`go...`) 
  
    fmt.Println(reg.FindAllString("go java python golang php", 1)) 
} 



/*
run:

[go ja]

*/

 

70+ SQL courses for beginners and professionals