From: "D. Deryl Downey" <me@...>
Date: 2013-01-25T13:19:37+09:00
Subject: Re: General Ruby syntax questions

Err if you've used C++ even a little then 99% of that should make 
perfect sense. What exactly don't you understand?


Scott Price wrote:
> -- Can sombody please break these down and let me know what each line of
> these examples are doing. I've used c++ a little, but I'm new to Ruby.
> Any response would be greatly appreciated.
>
>
>
>
>
>
> def pow(base, exponent)
>    result = 1
>
>    i = 1
>    while i<= exponent
>      result = result * base
>      i += 1
>    end
>
>    result
> end
>
> ------------------------------------
> def sum(nums)
>    total = 0
>
>    i = 0
>    while i<  nums.count
>      total += nums[i]
>
>      i += 1
>    end
>
>    # return total
>    total
> end
>
> -------------------------------------
> def is_prime?(num)
>    i = 2
>    while i<  num
>      is_divisible = ((num % i) == 0)
>
>      if is_divisible
>        # divisor found; stop and return false!
>        return false
>      end
>
>      i += 1
>    end
>
>    # no divisors found
>    true
> end
> -------------------------------------
> def primes(max)
>    primes_arr = []
>
>    i = 2
>    while i<  max
>      if is_prime?(i)
>        # i is prime; add it to the array
>        primes_arr<<  i
>      end
>
>      i += 1
>    end
>
>    # return primes_arr
>    primes_arr
> end
>

-- 
D. Deryl Downey

"The bug which you would fright me with I seek" - William Shakespeare - 
The Winter's Tale, Act III, Scene II - A court of Justice.