do czego służy rubin
Its mainly used for web apps but since it has similiar sntax to python you can also use it for data analysis and prototyping.
ruby dla programistów
irb(main):007:0> a = 3 ** 2
=> 9
irb(main):008:0> b = 4 ** 2
=> 16
irb(main):009:0> Math.sqrt(a+b)
=> 5.0