hamzakc

===> Load global config file /home/hamza/.config/rebar3/rebar.config
===> Evaluating config script "/home/hamza/.cache/rebar3/plugins/lfe/rebar.config.script"
===> 25.2.3 satisfies the requirement for minimum OTP version 18
===> Evaluating config script "/home/hamza/.cache/rebar3/plugins/hex_core/rebar.config.script"
===> 25.2.3 satisfies the requirement for minimum OTP version 19.3
===> Setting paths to [deps]
===> Compile (apps)
===> Setting paths to [plugins]
===> Setting paths to [deps]
===> Setting paths to [plugins]

hamzakc

;; Exercies 1
;; Write a function called ends_in_3(num) that returns true if the final digit of num is 3, and false otherwise.

(fn ends_in_3 [num]
  (let [num-str (.. "" num)]
    (let [tbl (icollect [s (string.gmatch num-str "%d")] s)]
      (if (= "3" (. tbl (length tbl)))
        true
        false))))

hamzakc

class AddsUserToList
  attr_reader :notifies_user_klass, :user_klass
  def initialize(user_klass = User, notifies_user_klass = NotifiesUser)
    @user_klass = user_klass
    @notifies_user_klass = notifies_user_klass
  end
 
  def add(params)
    user_klass.find_by_username!(params.fetch(:username).tap do |user|
      notifies_user_klass.(user, params.fetch(:mailing_list_name))