How to cleanly verify if the user input is an integer in Ruby?
In answer to camdixon's question, I submit this proposed solution.
Use the accepted answer, but instead of rescue nil, use rescue false and wrap your code in a simple if.
Example
print "Integer please: " user_num=Integer(gets) rescue false if user_num # code end
Use input_string.to_i.to_s == input_string to verify whether the input_string is an integer or not without regex.
> input_string = "11a12"> input_string.to_i.to_s == input_string=> false> input_string = "11"> input_string.to_i.to_s == input_string=> true> input_string = "11.5"> input_string.to_i.to_s == input_string=> false