Today I watched quite interesting hangout. It was a quick (30min) discussion. Attenders:

• Kent Beck,
• Martin Fowler,
• David Heinemeier Hansson

Few days ago @DHH wrote some “controversial” post on his blog about TDD and in general presented his point of view to TDD. As a result of that we got a huge discussion on the Twitter about TDD. Some people says that every professional should use TDD and and so on. As a result of that guys from ThoughtWorks organized this hangout.  

Youtube playlist (Parts from 1 to 6)

Here is a talk Uncle Bob gave in 2011 at Ruby Midewest 2011. Honestly I back to this talk every two months or so. Also must to add that Im a great fun of Uncle Bob (@unclebobmartin) It also contains some notes about MVC, what’s the true purpose of MVC and it was created and so on. Here it is (you need to click on Read more to load the embeded youtube video):

Have a great day

Swedish House Mafia - Greyhound on Vimeo.

–robert

Let’s write it down.

To be honest I don’t remember when I actually started thinking about writing down most the solutions I found over the internet or implemented myself. I realized that from time to time I go back to solutions, code snippets or config files I created or modified to fulfill some specific requirements. Good is it I wrote it down somewhere, put on Gist or Pastebin but what if I did not ? Let’s say I just configured Nginx as loadbalancer and for example after a year or so I need to make something exactly the same or at last similar. What’s then ? I need to go through the NGINX’s documentation again or start searching over google. Sure in some case I remember exactly how I solved some specific problem but when it was some time ago then … This is the reason why I decided to create this simple blog. I hope it wont evolve to any unpredictable way. You can thing about this blog like a about my notebook. If somebody else will find my notes useful/helpful - even better. Let’s make this World better.

Have a great day.

P.S As you probably noticed Im not a native speaker, so in case you guys will find some mistakes in my post (probably more than one) please let me know ASAP.

Our universe (in SI units):

$\begin{align*} & \phi(x,y) = \phi \left(\sum_{i=1}^n x_ie_i, \sum_{j=1}^n y_je_j \right) = \sum_{i=1}^n \sum_{j=1}^n x_i y_j \phi(e_i, e_j) = \\ & (x_1, \ldots, x_n) \left( \begin{array}{ccc} \phi(e_1, e_1) & \cdots & \phi(e_1, e_n) \\ \vdots & \ddots & \vdots \\ \phi(e_n, e_1) & \cdots & \phi(e_n, e_n) \end{array} \right) \left( \begin{array}{c} y_1 \\ \vdots \\ y_n \end{array} \right) \end{align*}$

def show
  @widget = Widget(params[:id])
  respond_to do |format|
    format.html # show.html.erb
    format.json { render json: @widget }
  end
end

package interfaces
import (
	"io"
	"os"
)

//PipeExample function
func PipeExample() error {
	r, w := io.Pipe()

	go func() {
		w.Write([]byte("test\n"))
		w.Close()
	}()

	if _, err := io.Copy(os.Stdout, r); err != nil {
		return err
	}
	return nil
}

package interfaces

import (
	"fmt"
	"io"
	"os"
)

// Copy data from std in to std out
func Copy(in io.ReadSeeker, out io.Writer) error {
	w := io.MultiWriter(out, os.Stdout)
	if _, err := io.Copy(w, in); err != nil {
		return err
	}
	in.Seek(0, 0)
	buf := make([]byte, 64)
	if _, err := io.CopyBuffer(w, in, buf); err != nil {
		return err
	}

	fmt.Println()
	return nil
}

–robert