Ruby evaluate without eval?

Question

How could I evaluate at mathematical string without using eval?

Example:

mathstring = \"3+3\"

Anyway that can be evaluated without

Answer 1

Sure--you'd just want to somehow parse the expression using something other than the bare Ruby interpreter.

There appear to be some good options here: https://www.ruby-toolbox.com/search?q=math

Alternatively, it probably wouldn't be that hard to write your own parser. (Not that I've seriously tried--I could be totally full of crap.)