VimleshS

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.

VimleshS

Generate private key (.key)

# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048
    
# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)
openssl ecparam -genkey -name secp384r1 -out server.key

VimleshS

package main

import (
	"crypto/tls"
	"crypto/x509"
	"flag"
	"io/ioutil"
	"log"
	"net/http"
)

VimleshS

#Reference
#https://devnotcorp.wordpress.com/2012/08/21/usage-examples-of-rubys-openssl-lib/



#!/usr/bin/ruby
require 'openssl'
require 'date'
require 'time'
 

VimleshS

/*
Call the api client like this:

	var client = new ApiClient<SEnvelope>("https://baseurl.com/api/v1");
	//you would overload and add an auth_token param here 
 	client.GetDtoAsync("envelopes", "object_id", (response) => //callback
                                                          {
                                                              this.SEnvelope = response.Data;//should be an envelope from the server
                                                          });
                                                          

VimleshS

Patterns of Enterprise Application Architecture

By Martin Fowler (2002)

Chapter 1: Layering

A basic example of layering: FTP < TCP < IP < Ethernet

Benefis of layering:

• You can understand a layer without knowing much about the others.
• Minimize dependencies.

VimleshS

abc	1	2	3
def	4	5	6
ga	7	9	10
hij	1	5	99

VimleshS

Go program interaction

Example of how to use stdout and stdin from other programs in golang

Requires go

Run

go run parentprocess.go

VimleshS

An Ansible summary

Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)

Configuration file

intro_configuration.html

First one found from of

VimleshS

# Add field
echo '{"hello": "world"}' | jq --arg foo bar '. + {foo: $foo}'
# {
#   "hello": "world",
#   "foo": "bar"
# }

# Override field value
echo '{"hello": "world"}' | jq --arg foo bar '. + {hello: $foo}'
{