p和看跌之间的区别

Question

Why in below code when I

p the object it returns array of integers #=> [[1, 2, 4]]

puts the object it returns array of single integers #=>1 2 4

Class of single integers is still an array, but I do not understand why they return as single numbers. Thanks

class Matrix
  attr_reader :rows, :columns

  def initialize(source)
    @rows = parse_rows_from_source(source)
    @columns = @rows.transpose
  end

  private

  def parse_rows_from_source(source)
    source.lines.map { |line| line.split.map(&:to_i)}
  end
end

p Matrix.new("1, 2/n3, 4").rows```

Answer 1

p object is equal to puts object.inspect

That's the main difference.

Object#inspect returns a string containing a human-readable representation of object.