Portál AbcLinuxu, 1. května 2024 10:59
Google světu ukázal jazyk Dart, jehož účelem je nahradit JavaScript ve webových aplikacích. Veškeré informace a ukázky najdete na dartlang.org. Jazyk se dost podobá Javě, ale zachovává některé rysy JavaScriptu.
Tiskni
Sdílej:
10.10.2011 13:24
Saljack | skóre: 28
| blog: Saljack
| Praha
10.10.2011 13:52
Rezza | skóre: 25
| blog: rezza
| Brno
Rozšiřitelnost není znásilňování.knihovna od zakladu prekopavajici cely jazyk za ucelem, aby se dal ten jazyk pouzivat k tomu, k cemu byl vubec navrzeny mi prijde opravdu trochu jako zvracenost a znasilneni
Jo, a největší prča na tom je, že ta knihovna nemění vůbec nic.to jo. mimochodem, osobne radsi preferuju dojo, prijde mi takove nejake civilizovanejsi.
Čekal bych, že zrovna ty budeš mít trochu pochopení, v JavaScriptu je pod pár vrstvami špíny a hnusu ukryté Scheme, které by mohly pochopit i masyano, jedna cast meho ja ocenuje, ze tam je opravdu schovany scheme, a ze JS zpristupnuje funkcionalni zpusob programovani i sirokym masam. ale ta druha cast meho ja, ktera v tom obcas musi neco programovat by autory specifikace i s implementatory vymachala v dehtu a peri a hnala je pres cele silicon valley.
10.10.2011 14:17
Luboš Doležel (Doli) | skóre: 98
| blog: Doliho blog
| Kladensko
10.10.2011 19:32
alblaho | skóre: 17
| blog: alblog
Hello world v haxe zkompilovaný do JavaScriptu:
haxe
10.10.2011 14:32
import js.Lib;
class Main
{
static function main()
{
Lib.alert("ahoj světe");
}
}
javascript
$estr = function() { return js.Boot.__string_rec(this,''); }
Std = function() { }
Std.__name__ = ["Std"];
Std["is"] = function(v,t) {
$s.push("Std::is");
var $spos = $s.length;
var $tmp = js.Boot.__instanceof(v,t);
$s.pop();
return $tmp;
$s.pop();
}
Std.string = function(s) {
$s.push("Std::string");
var $spos = $s.length;
var $tmp = js.Boot.__string_rec(s,"");
$s.pop();
return $tmp;
$s.pop();
}
Std["int"] = function(x) {
$s.push("Std::int");
var $spos = $s.length;
if(x < 0) {
var $tmp = Math.ceil(x);
$s.pop();
return $tmp;
}
var $tmp = Math.floor(x);
$s.pop();
return $tmp;
$s.pop();
}
Std.parseInt = function(x) {
$s.push("Std::parseInt");
var $spos = $s.length;
var v = parseInt(x,10);
if(v == 0 && x.charCodeAt(1) == 120) v = parseInt(x);
if(isNaN(v)) {
$s.pop();
return null;
}
var $tmp = v;
$s.pop();
return $tmp;
$s.pop();
}
Std.parseFloat = function(x) {
$s.push("Std::parseFloat");
var $spos = $s.length;
var $tmp = parseFloat(x);
$s.pop();
return $tmp;
$s.pop();
}
Std.random = function(x) {
$s.push("Std::random");
var $spos = $s.length;
var $tmp = Math.floor(Math.random() * x);
$s.pop();
return $tmp;
$s.pop();
}
Std.prototype.__class__ = Std;
IntIter = function(min,max) {
if( min === $_ ) return;
$s.push("IntIter::new");
var $spos = $s.length;
this.min = min;
this.max = max;
$s.pop();
}
IntIter.__name__ = ["IntIter"];
IntIter.prototype.min = null;
IntIter.prototype.max = null;
IntIter.prototype.hasNext = function() {
$s.push("IntIter::hasNext");
var $spos = $s.length;
var $tmp = this.min < this.max;
$s.pop();
return $tmp;
$s.pop();
}
IntIter.prototype.next = function() {
$s.push("IntIter::next");
var $spos = $s.length;
var $tmp = this.min++;
$s.pop();
return $tmp;
$s.pop();
}
IntIter.prototype.__class__ = IntIter;
Main = function() { }
Main.__name__ = ["Main"];
Main.main = function() {
$s.push("Main::main");
var $spos = $s.length;
js.Lib.alert("ahoj světe");
$s.pop();
}
Main.prototype.__class__ = Main;
if(typeof js=='undefined') js = {}
js.Lib = function() { }
js.Lib.__name__ = ["js","Lib"];
js.Lib.isIE = null;
js.Lib.isOpera = null;
js.Lib.document = null;
js.Lib.window = null;
js.Lib.alert = function(v) {
$s.push("js.Lib::alert");
var $spos = $s.length;
alert(js.Boot.__string_rec(v,""));
$s.pop();
}
js.Lib.eval = function(code) {
$s.push("js.Lib::eval");
var $spos = $s.length;
var $tmp = eval(code);
$s.pop();
return $tmp;
$s.pop();
}
js.Lib.setErrorHandler = function(f) {
$s.push("js.Lib::setErrorHandler");
var $spos = $s.length;
js.Lib.onerror = f;
$s.pop();
}
js.Lib.prototype.__class__ = js.Lib;
js.Boot = function() { }
js.Boot.__name__ = ["js","Boot"];
js.Boot.__unhtml = function(s) {
$s.push("js.Boot::__unhtml");
var $spos = $s.length;
var $tmp = s.split("&").join("&").split("<").join("<").split(">").join(">");
$s.pop();
return $tmp;
$s.pop();
}
js.Boot.__trace = function(v,i) {
$s.push("js.Boot::__trace");
var $spos = $s.length;
var msg = i != null?i.fileName + ":" + i.lineNumber + ": ":"";
msg += js.Boot.__unhtml(js.Boot.__string_rec(v,"")) + "<br/>";
var d = document.getElementById("haxe:trace");
if(d == null) alert("No haxe:trace element defined\n" + msg); else d.innerHTML += msg;
$s.pop();
}
js.Boot.__clear_trace = function() {
$s.push("js.Boot::__clear_trace");
var $spos = $s.length;
var d = document.getElementById("haxe:trace");
if(d != null) d.innerHTML = "";
$s.pop();
}
js.Boot.__closure = function(o,f) {
$s.push("js.Boot::__closure");
var $spos = $s.length;
var m = o[f];
if(m == null) {
$s.pop();
return null;
}
var f1 = function() {
$s.push("js.Boot::__closure@67");
var $spos = $s.length;
var $tmp = m.apply(o,arguments);
$s.pop();
return $tmp;
$s.pop();
};
f1.scope = o;
f1.method = m;
$s.pop();
return f1;
$s.pop();
}
js.Boot.__string_rec = function(o,s) {
$s.push("js.Boot::__string_rec");
var $spos = $s.length;
if(o == null) {
$s.pop();
return "null";
}
if(s.length >= 5) {
$s.pop();
return "<...>";
}
var t = typeof(o);
if(t == "function" && (o.__name__ != null || o.__ename__ != null)) t = "object";
switch(t) {
case "object":
if(o instanceof Array) {
if(o.__enum__ != null) {
if(o.length == 2) {
var $tmp = o[0];
$s.pop();
return $tmp;
}
var str = o[0] + "(";
s += "\t";
var _g1 = 2, _g = o.length;
while(_g1 < _g) {
var i = _g1++;
if(i != 2) str += "," + js.Boot.__string_rec(o[i],s); else str += js.Boot.__string_rec(o[i],s);
}
var $tmp = str + ")";
$s.pop();
return $tmp;
}
var l = o.length;
var i;
var str = "[";
s += "\t";
var _g = 0;
while(_g < l) {
var i1 = _g++;
str += (i1 > 0?",":"") + js.Boot.__string_rec(o[i1],s);
}
str += "]";
$s.pop();
return str;
}
var tostr;
try {
tostr = o.toString;
} catch( e ) {
$e = [];
while($s.length >= $spos) $e.unshift($s.pop());
$s.push($e[0]);
$s.pop();
return "???";
}
if(tostr != null && tostr != Object.toString) {
var s2 = o.toString();
if(s2 != "[object Object]") {
$s.pop();
return s2;
}
}
var k = null;
var str = "{\n";
s += "\t";
var hasp = o.hasOwnProperty != null;
for( var k in o ) { ;
if(hasp && !o.hasOwnProperty(k)) {
continue;
}
if(k == "prototype" || k == "__class__" || k == "__super__" || k == "__interfaces__") {
continue;
}
if(str.length != 2) str += ", \n";
str += s + k + " : " + js.Boot.__string_rec(o[k],s);
}
s = s.substring(1);
str += "\n" + s + "}";
$s.pop();
return str;
case "function":
$s.pop();
return "<function>";
case "string":
$s.pop();
return o;
default:
var $tmp = String(o);
$s.pop();
return $tmp;
}
$s.pop();
}
js.Boot.__interfLoop = function(cc,cl) {
$s.push("js.Boot::__interfLoop");
var $spos = $s.length;
if(cc == null) {
$s.pop();
return false;
}
if(cc == cl) {
$s.pop();
return true;
}
var intf = cc.__interfaces__;
if(intf != null) {
var _g1 = 0, _g = intf.length;
while(_g1 < _g) {
var i = _g1++;
var i1 = intf[i];
if(i1 == cl || js.Boot.__interfLoop(i1,cl)) {
$s.pop();
return true;
}
}
}
var $tmp = js.Boot.__interfLoop(cc.__super__,cl);
$s.pop();
return $tmp;
$s.pop();
}
js.Boot.__instanceof = function(o,cl) {
$s.push("js.Boot::__instanceof");
var $spos = $s.length;
try {
if(o instanceof cl) {
if(cl == Array) {
var $tmp = o.__enum__ == null;
$s.pop();
return $tmp;
}
$s.pop();
return true;
}
if(js.Boot.__interfLoop(o.__class__,cl)) {
$s.pop();
return true;
}
} catch( e ) {
$e = [];
while($s.length >= $spos) $e.unshift($s.pop());
$s.push($e[0]);
if(cl == null) {
$s.pop();
return false;
}
}
switch(cl) {
case Int:
var $tmp = Math.ceil(o%2147483648.0) === o;
$s.pop();
return $tmp;
case Float:
var $tmp = typeof(o) == "number";
$s.pop();
return $tmp;
case Bool:
var $tmp = o === true || o === false;
$s.pop();
return $tmp;
case String:
var $tmp = typeof(o) == "string";
$s.pop();
return $tmp;
case Dynamic:
$s.pop();
return true;
default:
if(o == null) {
$s.pop();
return false;
}
var $tmp = o.__enum__ == cl || cl == Class && o.__name__ != null || cl == Enum && o.__ename__ != null;
$s.pop();
return $tmp;
}
$s.pop();
}
js.Boot.__init = function() {
$s.push("js.Boot::__init");
var $spos = $s.length;
js.Lib.isIE = typeof document!='undefined' && document.all != null && typeof window!='undefined' && window.opera == null;
js.Lib.isOpera = typeof window!='undefined' && window.opera != null;
Array.prototype.copy = Array.prototype.slice;
Array.prototype.insert = function(i,x) {
$s.push("js.Boot::__init@205");
var $spos = $s.length;
this.splice(i,0,x);
$s.pop();
};
Array.prototype.remove = Array.prototype.indexOf?function(obj) {
$s.push("js.Boot::__init@208");
var $spos = $s.length;
var idx = this.indexOf(obj);
if(idx == -1) {
$s.pop();
return false;
}
this.splice(idx,1);
$s.pop();
return true;
$s.pop();
}:function(obj) {
$s.push("js.Boot::__init@213");
var $spos = $s.length;
var i = 0;
var l = this.length;
while(i < l) {
if(this[i] == obj) {
this.splice(i,1);
$s.pop();
return true;
}
i++;
}
$s.pop();
return false;
$s.pop();
};
Array.prototype.iterator = function() {
$s.push("js.Boot::__init@225");
var $spos = $s.length;
var $tmp = { cur : 0, arr : this, hasNext : function() {
$s.push("js.Boot::__init@225@229");
var $spos = $s.length;
var $tmp = this.cur < this.arr.length;
$s.pop();
return $tmp;
$s.pop();
}, next : function() {
$s.push("js.Boot::__init@225@232");
var $spos = $s.length;
var $tmp = this.arr[this.cur++];
$s.pop();
return $tmp;
$s.pop();
}};
$s.pop();
return $tmp;
$s.pop();
};
if(String.prototype.cca == null) String.prototype.cca = String.prototype.charCodeAt;
String.prototype.charCodeAt = function(i) {
$s.push("js.Boot::__init@239");
var $spos = $s.length;
var x = this.cca(i);
if(x != x) {
$s.pop();
return null;
}
$s.pop();
return x;
$s.pop();
};
var oldsub = String.prototype.substr;
String.prototype.substr = function(pos,len) {
$s.push("js.Boot::__init@246");
var $spos = $s.length;
if(pos != null && pos != 0 && len != null && len < 0) {
$s.pop();
return "";
}
if(len == null) len = this.length;
if(pos < 0) {
pos = this.length + pos;
if(pos < 0) pos = 0;
} else if(len < 0) len = this.length + len - pos;
var $tmp = oldsub.apply(this,[pos,len]);
$s.pop();
return $tmp;
$s.pop();
};
$closure = js.Boot.__closure;
$s.pop();
}
js.Boot.prototype.__class__ = js.Boot;
$_ = {}
js.Boot.__res = {}
$s = [];
$e = [];
js.Boot.__init();
{
String.prototype.__class__ = String;
String.__name__ = ["String"];
Array.prototype.__class__ = Array;
Array.__name__ = ["Array"];
Int = { __name__ : ["Int"]};
Dynamic = { __name__ : ["Dynamic"]};
Float = Number;
Float.__name__ = ["Float"];
Bool = { __ename__ : ["Bool"]};
Class = { __name__ : ["Class"]};
Enum = { };
Void = { __ename__ : ["Void"]};
}
{
Math.__name__ = ["Math"];
Math.NaN = Number["NaN"];
Math.NEGATIVE_INFINITY = Number["NEGATIVE_INFINITY"];
Math.POSITIVE_INFINITY = Number["POSITIVE_INFINITY"];
Math.isFinite = function(i) {
$s.push("js.Boot::__init");
var $spos = $s.length;
var $tmp = isFinite(i);
$s.pop();
return $tmp;
$s.pop();
};
Math.isNaN = function(i) {
$s.push("js.Boot::__init");
var $spos = $s.length;
var $tmp = isNaN(i);
$s.pop();
return $tmp;
$s.pop();
};
}
{
js.Lib.document = document;
js.Lib.window = window;
onerror = function(msg,url,line) {
var stack = $s.copy();
var f = js.Lib.onerror;
$s.splice(0,$s.length);
if( f == null ) {
var i = stack.length;
var s = "";
while( --i >= 0 )
s += "Called from "+stack[i]+"\n";
alert(msg+"\n\n"+s);
return false;
}
return f(msg,stack);
}
}
js.Lib.onerror = null;
Main.main()
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