Go Regular Expression Demonstration

Introduction

This challenge demonstrates how to use regular expressions in Golang.

Skills Graph

Regular Expressions

The challenge requires you to complete the code to perform various regular expression-related tasks in Golang.

Requirements

• Use the regexp package to perform regular expression-related tasks.
• Use MatchString to test whether a pattern matches a string.
• Use Compile to optimize a Regexp struct.
• Use MatchString to test a match like Compile.
• Use FindString to find the match for the regexp.
• Use FindStringIndex to find the first match and return the start and end indexes for the match instead of the matching text.
• Use FindStringSubmatch to return information for both p([a-z]+)ch and ([a-z]+).
• Use FindStringSubmatchIndex to return information about the indexes of matches and submatches.
• Use FindAllString to find all matches for a regexp.
• Use FindAllStringSubmatchIndex to apply to all matches in the input, not just the first.
• Use Match to test a match with []byte arguments and drop String from the function name.
• Use MustCompile to create global variables with regular expressions.
• Use ReplaceAllString to replace subsets of strings with other values.
• Use ReplaceAllFunc to transform matched text with a given function.

Example

$ go run regular-expressions.go
true
true
peach
idx: [0 5]
[peach ea]
[0 5 1 3]
[peach punch pinch]
all: [[0 5 1 3] [6 11 7 9] [12 17 13 15]]
[peach punch]
true
regexp: p([a-z]+)ch
a <fruit>
a PEACH

## For a complete reference on Go regular expressions check
## the [`regexp`](https://pkg.go.dev/regexp) package docs.

Summary

This challenge demonstrates how to use regular expressions in Golang to perform various tasks such as testing whether a pattern matches a string, finding the match for the regexp, and replacing subsets of strings with other values.