rubydubee

a,b,*c=[1,2,3,4,5]
puts c

#output :  c will become [3,4,5]
#3
#4
#5

rubydubee

array=[12,"pradyumna",23.98]
a,b,c=array
puts a,b,c

rubydubee

a,b,c=12,"Pradyumna",23.98
a,b,c=c,a,b
puts a,b,c

rubydubee

a=[1,2,3,4,4,3,3,5]
a.delete(3)
puts a                    #[1,2,4,4,5]

rubydubee

a= [1,2,4,1,5,2,4,1]
puts a.uniq            # [1,2,4,5]

# or just commit it

a.uniq!
puts a                 #[1,2,4,5]

rubydubee

class Animal
  attr_reader :name, :eyes, :appendages
  
  def initialize(name, eyes, appendages)
    @name, @eyes, @appendages = name, eyes, appendages
  end

  def inspect
    @name
  end

rubydubee

[1, 100,6, 23, 26, 10000].sort do |x, y|
  x == 6 ? 1 : x <=> y
end
# => [1, 23, 26, 100, 10000, 6]

rubydubee

arrays = [[1,2,3], [100], [10,20]]
arrays.sort_by { |x| x.size } # => [[100], [10, 20], [1, 2, 3]]

rubydubee

[4,2,1].sort #[1,2,4]
["pradyumna","ruby","bee"].sort #["bee","pradyumna","ruby"]

rubydubee

 #Union
 [1,2,3] | [1,4,5]                    # => [1, 2, 3, 4, 5]
 #Intersection
 [1,2,3] & [1,4,5]                    # => [1]
 #Difference
 [1,2,3] - [1,4,5]                    # => [2, 3]