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

Problem :

You are building a rule for parsing text strings and you want to determine if a string starts or ends with certain words or characters. How to do that?

Solution :

Use strings.HasPrefix() function to check if a string starts with certain word.

For example,

 if strings.HasPrefix(input, "please") {
 return "You don't have to be so polite"
 }

to check if the strings ends with certain character or word. Use strings.HasSuffix() function.

References :

http://golang.org/pkg/strings/#HasPrefix

http://golang.org/pkg/strings/#HasSuffix