interview questions

 # remove duplicates and nil

array = [1, 1, 2, 3, nil]

array_duplicate = array.compact

array_nil = array.reject? {|c| c.empty}

# find items matching string "Si"

array = ['Simple', 'Ample', 'Sit']

def check_array

    if array

end 

# find users where the score is more than 100

array = [

  { name: 'Dan', score: 110 },

  { name: 'Mike', score: 57 },

  { name: 'Jill', score: 120 }

]

#sum of values

hash = {"a"=>10, "b"=>20, "c"=>30}

hash1 = hash.merge(hash[0]).merge([]hash1]).merge([hash[2])

sum_of_values = hash1.inject[sum+]

# find common items from below arrays

array1 = [1, 2, 3 ]

array2 = [0, 5, 2]

print array3 = array1 & array2

# use below methods with proper arguments

def func1(*input)

  puts input

end

def func2(**input)

  puts input

end

# for example

def math(x, y)

end

math(2,3)

# use metaprogramming to refactor these methods

def admin?

  role ==  'admin'

end

def marketer?

  role == 'marketer'

end

def sales?

  role == 'sales'

end

# write url routes for comments and bulk_upload

resources :posts do

  member do

    get 'comments'

  end

  collection do

    post 'bulk_upload'

  end

end

# give example of has_many through association

class Physician

     belongs_to :patients,through: :appointments

     has_many :appointments

end 

class Appointment 

      belongs_to :physician

      belongs_to :patient

end 

class Patient 

      belongs_to :physicians,through: :appointments

      has_many :appointments

end 

# ajax call to list post comments with controller, view, js code

# write rspec. if poduct count is 0 display message "Out of stock"