ruby regexp match all

Sure! Here is a response that explains each step of using Ruby regular expressions to match all occurrences:

Start by defining the regular expression pattern using the / delimiters. For example, if you want to match all occurrences of the word "hello", you would use /hello/.
To apply the regular expression pattern to a string, use the =~ operator followed by the string you want to search. For example, string =~ /hello/.
The =~ operator returns the index of the first match in the string, or nil if no match is found. You can use this index to extract the matched substring.
To extract all occurrences of the pattern in the string, you can use the scan method. This method returns an array of all matches found. For example, string.scan(/hello/). This will return an array of all occurrences of the word "hello" in the string.
If you want to capture groups within the regular expression pattern, you can use parentheses () to define the groups. For example, if you want to match all occurrences of a word followed by a number, you can use the pattern /(\w+)\s+(\d+)/. This pattern captures the word and the number as separate groups.
To access the captured groups, you can use the special variables $1, $2, and so on, depending on the number of groups captured. For example, if you use the pattern /(\w+)\s+(\d+)/ and find a match, you can access the word and the number using $1 and $2, respectively.

That's it! These steps should help you understand how to use Ruby regular expressions to match all occurrences in a string. Let me know if you have any further questions.