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Facebook Introduces 'Hack,' the Programming Language of the
Future<http://www.wired.com/wiredenterprise/2014/03/facebook-hack>
<http://www.wired.com/wiredenterprise/2014/03/facebook-hack>Lo ammetto
sono curioso come unamangusta curiosa e vado a lurkare. Provo le prime
pagine del tutorial e .... ecco il mio commento.
Poi magari mi sbaglio e diventa il nuovo PHP .... beh sapete bene cosa io
pensi del PHP.
Ah gira come virtual u HipHop.
===8< CUT HERE >8===
A big shoot but who guarantee us that have a future this language?
I have read that "move from the old dynamically typed system to a
statically typed arrangement". Mm great! Come back to the nehanderthalian
programming ;P
// ^-- FIXME: replace <?php with <?hh
// A Hack file always starts with <?hh
Great! In python I dont' say anything, is the interpreter that evaluate if
the cose is Python and is right.
<?hh
// Hack functions are annotated with types.
function my_negation(bool $x): bool {
return !$x;
}
// FIXME: annotate this function parameter
// and return with the type 'int'.
function add_one(/* TODO */ $x): /* TODO */ {
return $x+1;
}
Wonderful, the hated $ sign for the variables again. Doesn't start very
good. Go ahead.
<?hh
/* Hack errors come in multiple parts.
* Hover over the underlined parts!
*/
YES THE FIRST IS WHEN YOU ADOPT IT! (n.d.r.)
function add_one(int $x): int {
return $x+1;
}
function test(): void {
$my_string = 'hello';
// Some clever code ...
IT'S AN IMPOSSIBLE MISSION WRITE "CLEVER" CODE (n.d.r.)
add_one($my_string);
}
Got an error? Wow! The other languages ... too. SO where's the new?
Proceed with tutorial.
<?hh
// Prefixing a type with '?' permits null.
// TODO: fix the type of the parameter $x to permit null.
function f(int $x): void {
var_dump($x);
}
function test(): void {
f(123);
f(null);
}
Really smart! Use a sign as '?'' to permit null. Mmm, why I suppose that
they have smoke something really bad?
<?hh
interface User { public function getName(): string; }
function get_user_name(?User $user): string {
if($user !== null) {
// We checked that $user was not null.
// Its type is now 'User'.
/* TODO: return $user->getName() */
}
return '<invalid name>';
}
function test(User $user) {
$name1 = get_user_name($user);
$name2 = get_user_name(null);
}
No! The !== no! I can't' go ahead. Shit! As Facebook too.
===8< CUT HERE >8===
Carlos
--
Coloro che sognano di giorno sono uomini pericolosi, perche' sono capaci di
recitare a occhi aperti il loro sogno fino a renderlo possibile. Ed e'
questo che feci anch'io. - (T.E. Lawrence)
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