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How to get all the digits from a sentence string like "Lorem 123 ipsum 456 879" => "123456879" using regexp in ruby?
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=~ is Ruby's pattern-matching operator. It matches a regular expression on the left to a string on the right. If a match is found, the index of first match in string is returned. If the string cannot be found, nil will be returned.
To convert an string to a integer, we can use the built-in to_i method in Ruby. The to_i method takes the string as a argument and converts it to number, if a given string is not valid number then it returns 0.
Ruby | Regexp match() functionRegexp#match() : force_encoding?() is a Regexp class method which matches the regular expression with the string and specifies the position in the string to begin the search. Return: regular expression with the string after matching it.
Just replace everything else.
result = subject.gsub(/[^\d]/, '') If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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