re = /^[\-]?\d*[\.]?[\d]*$/m
str = '0.23455465
4.54656
-334343
-.34234234
234234.4234234
23123
323-312312
-12121.34344
asdasd
2312
213.3213.3213'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html