re = /(?!\d*[ -]\d)[^\d][+-]?\d*([.,]\d*)?(?<!-)(?!\d*[ -]\d)/i
str = '23 34 56 78 90
23-34-56-78-90
23-34
23.2
+2.1
-3.3434
433,55'
# 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