After speding a couple of hours talking to Pablo about computer related stuff I realized the impact of refactoring in the way of people code and how it is going to be related with tools like Eclipse.
I have been interested in this field for a year and I am becoming more and more.
Some useful links:
“[...]testing is done throughout a development effort and is not just an activity tacked on at the end of a development phase to see how well the developers did.”
“No amount of testing will improve the quality of a computer program.”
After spending almost a day debugging a memory leak which drove my app to crash I found the problem was with a vector<...> variable. It was not possible to free its memory with the proper destructor var.~vector<...>it always crashed in ntdll. Does anyone know anything about it?
The fix was to use Type *a = new Type[size] and then delete [] a;
If anyone knows what I did wrong please write it down here!!
Since I were tought about Bertrand Meyer’s Eiffel and its nice feature of design by contract I got interested in validation and verification of systems. Since most of the code I write is in C, C++ or even Java, I have looked for elegant ways of including contracts in C & C++. Next is what I am going to use in next developments.
Design by Contract in C++
The document is written by the author of “Imperfect C++”: Imperfect C++
Implementing a observer (publish-subscriber) pattern for drawing bussiness data on GUI is bit tricky since you are out of the event loop so the GUI will not be refreshed till the application return to this loop.
To make a windows refreshes out of the event loop wxWindows offer ::wxSafeYield() which flushes events suchs as paint ones and prevents of user events.
Below some lines of code illustrating the use of SafeYield:
Drawing and printing with wxWindows
void
VideoFrame::refresh(Observado *o)
{
wxMemoryDC dc;
wxBitmap tmp;
Features *ofeat, *efeat;
Frame f = (Frame ) o;
//
// new empty image
//
wxImage i(f->getWidth(), f->getHeight());
if (bitmap)
delete bitmap;
//
// Set data from the Frame
//
i.SetData(f->getData());
tmp = wxBitmap(i);
//
// Select the bitmap to draw on it
//
dc.SelectObject(tmp);
ofeat = f->getOrigFeatures();
efeat = f->getEndFeatures();
dc.SetPen(*wxGREEN_PEN);
dc.BeginDrawing();
ofeat->head();
efeat->head();
for (int j = 0; j < ofeat->size(); j ++) {
Point p0, pf;
p0 = ofeat->getPoint();
pf = efeat->getPoint();
dc.DrawLine(p0.x, p0.y, pf.x, pf.y);
ofeat->nextPoint();
efeat->nextPoint();
}
dc.EndDrawing();
//
// Detaching the bitmap so we can use it
//
dc.SelectObject( wxNullBitmap );
bitmap = new wxBitmap(tmp);
paintMe();
}
void
VideoFrame::paintMe()
{
wxClientDC dc(this);
PrepareDC(dc);
dc.DrawBitmap(*bitmap, 0, 0, TRUE);
//
// Send an OnPaint to the window
///
this->Refresh();
//
// Flush events: Calling the OnPaint method
//
::wxSafeYield();
}
Since I started work at HP I became worrier and worrier in producing shell scripts easy to extend. I have modified hundrends of badly written scripts and worst designed in a couple of days which led our team, fortunately, to a non-big fiasco.
Anyway, all could have been nice if the original scripts were acomplished some principles related mainly to:
1) Bad handling of temporary files.
2) Embbeding big chunks of awk scripts.
3) less than 1% of lines of comments.
Surfing the web I found an interesting web about good shell scripting practice, take a look to it, for sure it will be useful some day.
I have been working on the application all the night and it only lacks to add a few lines of code and connect the GUI to the core. If all go smoothly I will finish it on Monday or Thursday!!
I hope I can send the thesis to Turiel next Friday 
After Ru reminded me I had an old blog in www.livejournal.com/usrs/ggonzalez I wanted me to continue posting news about what happens in my life. I don’t want a lot of people reading this shit, even I would be happy without any read ever.&
I just want to keep this update to be aware of how much things are changing in our lifes 
Ah! And the new life is about I feel it is time to become the guy I used to be 
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