La Evolución de un Programador

En el año 2001, en un foro encontré un post bastante divertido, se trataba de la Evolución de un Programador y cómo éste evolucionaba también el clásico programa llamado Hola Mundo.

Para los no informáticos, Hola Mundo es el primer programa que realiza cualquier informático que inicia en esta profesión.

Con la Evolución de un Programador podéis ver quienes son los mejores programadores.

En fin, os dejo con la evolución del Hola Mundo, espero que algunos Managers, Comerciales no se ofendan.

Task is to write a program that prints “Hello World” on the
screen…make sure you see the last few attempts (Dilbert).

High School/Jr.High
==================

10 PRINT “HELLO WORLD”
20 END

First year in College
====================
program Hello(input, output)
begin
writeln(’Hello World’)
end.

Senior year in College
=====================
(defun hello
(print
(cons ‘Hello (list ‘World))))

New professional
===============
#include

void main(void)
{
char *message[] = {”Hello “, “World”};
int i;

for(i = 0; i < 2; ++i)
printf(”%s”, message[i]);
printf(”\n”);
}

Seasoned professional
====================
#include
#include

class string
{
private:
int size;
char *ptr;

public:
string() : size(0), ptr(new char(”)) {}

string(const string &s) : size(s.size)
{
ptr = new char[size + 1];
strcpy(ptr, s.ptr);
}

~string()
{
delete [] ptr;
}

friend ostream &operator <<(ostream &, const string &);

string &operator=(const char *);
};

ostream &operator<<(ostream &stream, const string &s)
{
return(stream << s.ptr);
}

string &string::operator=(const char *chrs)
{
if (this != &chrs)
{
delete [] ptr;
size = strlen(chrs);
ptr = new char[size + 1];
strcpy(ptr, chrs);
}
return(*this);
}

int main()
{
string str;

str = “Hello World”;
cout << str << endl;

return(0);
}

Master Programmer )
================
[
uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820)
]

library LHello
{
// bring in the master library
importlib(”actimp.tlb”);
importlib(”actexp.tlb”);

// bring in my interfaces
#include “pshlo.idl”

[
uuid(2573F8F5-CFEE-101A-9A9F-00AA00342820)
]
cotype THello
{
interface IHello;
interface IPersistFile;
};
};

[
exe,
uuid(2573F890-CFEE-101A-9A9F-00AA00342820)
]
module CHelloLib
{
// some code related header files
importheader();
importheader( );
importheader();
importheader(”pshlo.h”);
importheader(”shlo.hxx”);
importheader(”mycls.hxx”);

// needed typelibs
importlib(”actimp.tlb”);
importlib(”actexp.tlb”);
importlib(”thlo.tlb”);

[
uuid(2573F891-CFEE-101A-9A9F-00AA00342820),
aggregatable
]
coclass CHello
{
cotype THello;
};
};

#include “ipfix.hxx”

extern HANDLE hEvent;

class CHello : public CHelloBase
{
public:
IPFIX(CLSID_CHello);

CHello(IUnknown *pUnk);
~CHello();

HRESULT __stdcall PrintSz(LPWSTR pwszString);

private:
static int cObjRef;
};

#include
#include
#include
#include
#include “thlo.h”
#include “pshlo.h”
#include “shlo.hxx”
#include “mycls.hxx”

int CHello::cObjRef = 0;

CHello::CHello(IUnknown *pUnk) : CHelloBase(pUnk)
{
cObjRef++;
return;
}

HRESULT __stdcall CHello::PrintSz(LPWSTR pwszString)
{
printf(”%ws\n”, pwszString);
return(ResultFromScode(S_OK));
}

CHello::~CHello(void)
{
// when the object count goes to zero, stop the server
cObjRef–;
if( cObjRef == 0 )
PulseEvent(hEvent);

return;
}

#include
#include
#include “pshlo.h”
#include “shlo.hxx”
#include “mycls.hxx”

HANDLE hEvent;

int _cdecl main( int argc, char * argv[])
{
ULONG ulRef;
DWORD dwRegistration;
CHelloCF *pCF = new CHelloCF();

hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);

// Initialize the OLE libraries
CoInitializeEx(NULL, COINIT_MULTITHREADED);
CoRegisterClassObject(CLSID_CHello, pCF, CLSCTX_LOCAL_SERVER,
REGCLS_MULTIPLEUSE, &dwRegistration);

// wait on an event to stop
WaitForSingleObject(hEvent, INFINITE);

// revoke and release the class object
CoRevokeClassObject(dwRegistration);
ulRef = pCF-Release();

// Tell OLE we are going away.
CoUninitialize();

return(0);
}

extern CLSID CLSID_CHello;
extern UUID LIBID_CHelloLib;

CLSID CLSID_CHello = { /* 2573F891-CFEE-101A-9A9F-00AA00342820 */
0×2573F891,
0xCFEE,
0×101A,
{ 0×9A, 0×9F, 0×00, 0xAA, 0×00, 0×34, 0×28, 0×20 }
};

UUID LIBID_CHelloLib = { /* 2573F890-CFEE-101A-9A9F-00AA00342820 */
0×2573F890,
0xCFEE,
0×101A,
{ 0×9A, 0×9F, 0×00, 0xAA, 0×00, 0×34, 0×28, 0×20 }
};

#include
#include
#include
#include
#include
#include “pshlo.h”
#include “shlo.hxx”
#include “clsid.h”

int _cdecl main( int argc, char * argv[])
{
HRESULT hRslt;
IHello *pHello;
ULONG ulCnt;
IMoniker * pmk;
WCHAR wcsT[_MAX_PATH];
WCHAR wcsPath[2 * _MAX_PATH];

// get object path
wcsPath[0] = ”;
wcsT[0] = ”;
if( argc 1) {
mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1);
wcsupr(wcsPath);
}
else {
fprintf(stderr, “Object path must be specified\n”);
return(1);
}

// get print string
if(argc 2)
mbstowcs(wcsT, argv[2], strlen(argv[2]) + 1);
else
wcscpy(wcsT, L”Hello World”);

printf(”Linking to object %ws\n”, wcsPath);
printf(”Text String %ws\n”, wcsT);

// Initialize the OLE libraries
hRslt = CoInitializeEx(NULL, COINIT_MULTITHREADED);
if(SUCCEEDED(hRslt)) {
hRslt = CreateFileMoniker(wcsPath, &pmk);
if(SUCCEEDED(hRslt)
hRslt = BindMoniker(pmk, 0, IID_IHello, (void **)&pHello);
if(SUCCEEDED(hRslt)) {
// print a string out
pHello- PrintSz(wcsT);

Sleep(2000);
ulCnt = pHello- Release();
}
else
printf(”Failure to connect, status: %lx”, hRslt);
// Tell OLE we are going away.
CoUninitialize();
}

return(0);
}

Apprentice Hacker
==================
#!/usr/local/bin/perl
$msg=”Hello, world.\n”;
if ($#ARGV = 0) {
while(defined($arg=shift(@ARGV))) {
$outfilename = $arg;
open(FILE, ” ” . $outfilename) || die “Can’t write $arg: $!\n”;
print (FILE $msg);
close(FILE) || die “Can’t close $arg: $!\n”;
}
} else {
print ($msg);
}
1;

Experienced Hacker
==================
#include
#define S “Hello, World\n”
main(){exit(printf(S) == strlen(S) ? 0 : 1);}

Seasoned Hacker
==================
% cc -o a.out ~/src/misc/hw/hw.c
% a.out

Guru Hacker
==================
% cat
Hello, world.
^^D

New Manager
==================
10 PRINT “HELLO WORLD”
20 END

Middle Manager
==================
mail -s “Hello, world.” bob@b12
Bob, could you please write me a program that prints “Hello,
world.”?
I need it by tomorrow.
^^D

Senior Manager
==================
% zmail jim
I need a “Hello, world.” program by this afternoon.

Chief Executive
==================
% letter
letter: Command not found.
% mail
To: ^^X ^^F ^^C
% help mail
help: Command not found.
% damn!
!: Event unrecognized
% logout

[From: http://lists.xml.org/archives/xml-dev/199712/msg00322.html]

Os animáis a realizar un port a otra plataforma o lenguaje de programación?. Python, Ruby, PHP, Java, eh??

Protestant work ethic

 

By Wikipedia:

The Protestant work ethic, sometimes called the Puritan work ethic, is a Calvinist value emphasizing the necessity of constant labor in a person’s calling as a sign of personal salvation. Protestants beginning with Martin Luther had reconceptualised work as a duty in the world for the benefit of the individual and society as a whole. The Catholic idea of good works was transformed into an obligation to work diligently as a sign of grace.

http://en.wikipedia.org/wiki/Protestant_work_ethic

Hacker Ethic

Six years ago I read the “The Hacker Ethic and the Spirit of Information Age” book, by Pekka Himanen (this book is a collaborative work between Pekka Himanen, Linus Torvalds and Manuel Castells -philosopher, hacker and sociologist, respectively) and understood that Hacker Ethic is a new is a new morality that defies the Protestant work ethic, outlined nearly a century ago Max Weber in “The protrestant ethic and the spirit of capitalism” articuled.

Now, Pekka Himanen articulates how hackers represent a new, opposing spirit for the information age. Underlying hackers’ technical creations are the hacker values that produced them and that challenge us all.

The Hacker Ethic values promote passionate and freely rhythmed work; the belief that individuals can create great things by joining forces in imaginative ways; and the need to maintain our existing ethical ideals, such as privacy and equality, in our new, increasingly technologized society

If you want to read this book, you could googlear …

What is Holism?

An Wikipedia definition is:

Holism (from ὅλος holos, a Greek word meaning all, entire, total) is the idea that all the properties of a given system (biological, chemical, social, economic, mental, linguistic, etc.) cannot be determined or explained by its component parts alone. Instead, the system as a whole determines in an important way how the parts behave.

In other words, Holism is a property of any System. But what is Systems? Wikipedia says:

System is a set of interacting or interdependent entities, real or abstract, forming an integrated whole.

Then, Holism could be used as an approach to understand the reality or abstraction. No?. Yes!.

A map-printed is a system, in this case it represents a specific geography/location (reality). Its elements or parts are: paths, orientation, size/scale, blocks, streets, traffic signs, etc.
Commonly, this map-printed is called model.

A PC is other example of system. In Software Engineering a Database Server is a set of elements as PC-server, DDBB engine, tables, rows, columns, metadata, data, constrains, etc. A representation of the Database Server could be a Entity-Relation model.

The Global warming Problem is other kind of System and it is possible to get a model too . It is a complex problem because is a big-System with many element and unknow relationships beetwen its parts. There is not enough paper for drawing this model.

Well, Holism is an approach that help us to interpret a System.

Here a table that summarize all that a bit more clearly.

http://marikaya.wordpress.com/2007/04/03/holism-versus-reductionism

Regards!