mAlishera

Originally published in June 2008

When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.

To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.

What to expect

Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.

mAlishera

def maskarad(input, maska)
  input = input.to_s.chars
 
  maska.gsub(/@/) do |at|
    input.shift
  end.gsub(/^-*/, '').gsub(/-*$/, '') + input.join
end
 
=begin Input data
  Маска               | Номер | Результат

mAlishera

defmodule Messaging.Repo.Migrations.CreateGroupChatVersions do
  use Ecto.Migration

  def change do
    create table(:group_chat_versions, primary_key: false) do
      add :group_chat_id, :uuid, primary_key: true
      add :version, :integer, primary_key: true

      timestamps
    end

mAlishera

class CreateUsers < ActiveRecord::Migration
  def change
    create_table :users do |t|
     ...

      t.datetime 'inserted_at', null: false
      t.datetime 'updated_at', null: false
    end
  end
end

mAlishera

...
gem 'composite_primary_keys', '=8.1.5'
...

mAlishera

...
  class Application < Rails::Application

  ...
    config.middleware.insert_before "ActionDispatch::Callbacks", "MyMiddleware"
  ...
...      

mAlishera

class MyMiddleware
  def initialize(app)
    @app = app
  end

  def call(env)
    dup._call(env)
  end

  def _call(env)

mAlishera

class ConfigsController < ApplicationController
  skip_before_filter :verify_authenticity_token, only: [:create, :new]

  ...
end

mAlishera

int main(int argc, const char * argv[]) {
  int num, new_num(0), i(0), new_i(0), temp_i;

  printf("введите x\n");
  scanf("%i", &num);
  temp_i = i;
  while (i <= num) {
    while (i) {
        new_i = i*10 + (i % 10);
        i = i/10;

mAlishera

//
int x;
int d[] = {3, 4, 5, 6};
x = d[2] + 3*d[3];

const int N = 10;
int i, a[N];
for(i=0; i<N; i++) {
  printf("Введите a[%d]: ", i)
  scanf("%d\n", &a[i]);