ruby_array_memory.rb

# Note: This is pretty badly written code, I just wrote it as a quick proof for https://dev.to/edisonywh/how-arrays-work-the-way-arrays-work-3bpg
# To get the growth rate of the array, just look at the jump in memory bytes after every copy. You can see that it's about 1.5~

require 'objspace' # Require this for additional ObjectSpace methods

def memory_calculator
  array = Array.new
  result = {}

  100.times do |i|
    array << i

    memory = ObjectSpace.memsize_of(array)
    memory_in_bytes = memory / 8.0

    result["#{memory_in_bytes} bytes"] = {
      num_elements: array.size,
      total_available_memory: "#{memory_in_bytes} bytes",
    }
  end

  result
end