Count, size, length…too many choices in Ruby?

Question

I can\'t seem to find a definitive answer on this and I want to make sure I understand this to the \"n\'th level\" :-)

    a = { \"a\" => \"Hello\", \"b\" => \"Worl         


        

Answer 1

We have a several ways to find out how many elements in an array like .length, .count and .size. However, It's better to use array.size rather than array.count. Because .size is better in performance.