irridescentrambler

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.

irridescentrambler

CarrierWave home

https://github.com/jnicklas/carrierwave

This example will create an uploader that will upload a file stored in a model Model. The file will be stored locally in development and test environment and will use Amazon S3 in production.

CarrierWave installation

First add the gems.

irridescentrambler

sudo apt-get update
sudo apt-get -y upgrade

sudo apt-get install python3-setuptools
sudo easy_install3 pip
pip -V
#pip 9.0.1 from /usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg (python 3.5)

sudo chown -R username:username ~/.local/
# add to ./*shrc

irridescentrambler

function Person(name, city){
  this.name = name;
  this.city = city;
}

Person.prototype.greet = function(){
  console.log("Hello my name is " + this.name);
}

function Developer(name, city, language){

irridescentrambler

var nikhil = {
  name: "Nikhil",
  city: "Pune"
}

console.log(nikhil);

irridescentrambler

function Person(name, city){
  this.name = name;
  this.city = city;
}

Person.prototype.greet = function(){
  console.log("Hello my name is " + this.name);
}

function Developer(name, city, language){

irridescentrambler

// Resolved promise
let promise1 = new Promise((resolve, reject) => {
  resolve("Resolved this promise")
});

// Rejected promise
let promise2 = new Promise((resolve, reject) => {
  reject("Rejected the promise");
});

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let promise1 = new Promise((resolve, reject) => {
  setInterval(() => {
    resolve("Resolved the promise");
  }, 10000)
});

// promise.then(callback_for_resolved, callback_for_rejected)
promise1.then(
  (successResponse) => {
    console.log(successResponse);    

irridescentrambler

let promise1 = new Promise((resolve, reject) => {
  setInterval(() => {
    reject("This is rejected");
  }, 10000);
});

promise1.catch((errorResponse) => {
  console.log(errorResponse);
})

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new Promise((resolve, reject) => {
    console.log('Initial');

    resolve();
})
.then(() => {
    throw new Error('Something failed');
        
    console.log('Do this');
})