Certa vez eu quis explicar a um amigo porque escrever código em python para celular era mais legal que escrever código em C (native-symbian e não OpenC). Acho que hoje talvez eu consiga.
Segue os exemplos:
Python
print "Hello World"
C++-Epoc
// Hello World in C++, Epoc style (for Symbian OS)
#include < eikapp.h >
#include < eikdoc.h >
#include < eikappui.h >
class CHelloWorldAppUi;
class CEikApplication;
class CHelloWorldAppView;
class CHelloWorldApplication : public CEikApplication
{
public:
TUid AppDllUid() const;
protected:
CApaDocument* CreateDocumentL();
};
class CHelloWorldDocument : public CEikDocument
{
public:
static CHelloWorldDocument* NewL(CEikApplication& aApp);
static CHelloWorldDocument* NewLC(CEikApplication& aApp);
~CHelloWorldDocument(){};
public:
CEikAppUi* CreateAppUiL();
private:
void ConstructL() {};
CHelloWorldDocument(CEikApplication& aApp){};
};
class CHelloWorldAppUi : public CEikAppUi
{
public:
void ConstructL();
CHelloWorldAppUi(){};
~CHelloWorldAppUi(){};
};
static const TUid KUidHelloWorldApp = {0x10005B91};
GLDEF_C TInt E32Dll(TDllReason )
{
return KErrNone;
}
EXPORT_C CApaApplication* NewApplication()
{
return (new CHelloWorldApplication);
}
CApaDocument* CHelloWorldApplication::CreateDocumentL()
{
CApaDocument* document = CHelloWorldDocument::NewL(*this);
return document;
}
TUid CHelloWorldApplication::AppDllUid() const
{
return KUidHelloWorldApp;
}
CHelloWorldDocument* CHelloWorldDocument::NewL(CEikApplication& aApp)
{
CHelloWorldDocument* self = NewLC(aApp);
CleanupStack::Pop(self);
return self;
}
CHelloWorldDocument* CHelloWorldDocument::NewLC(CEikApplication& aApp)
{
CHelloWorldDocument* self = new (ELeave) CHelloWorldDocument(aApp);
CleanupStack::PushL(self);
self->ConstructL();
return self;
}
CEikAppUi* CHelloWorldDocument::CreateAppUiL()
{
CEikAppUi* appUi = new (ELeave) CHelloWorldAppUi;
return appUi;
}
void CHelloWorldAppUi::ConstructL()
{
BaseConstructL();
_LIT(message,"Hello!");
CAknInformationNote* informationNote = new (ELeave) CAknInformationNote;
informationNote->ExecuteLD(message);
}
fonte: http://www.roesler-ac.de/wolfram/hello.htm