exceptions

exceptions.rb

class EmptyArrayError < StandardError
end

def avg(arr)
    if arr.length == 0
        raise EmptyArrayError, "Average can only be called on arrays that have values."
    end

    sum = 0
    arr.each do |i|
        sum += i
    end
    avg = sum/arr.length

    return avg
end


begin
    puts avg([3, 6, 345])
    puts avg([])
rescue NameError => a
    puts "name error"
rescue EmptyArrayError => e
    puts "nothing to see here, #{e.message} #{e.backtrace.inspect}"
end