Allen Wirfs-Brock wrote:
On Jun 14, 2012, at 10:22 AM, Brendan Eich wrote:
Hemanth H.M wrote:
var info = { name: "Hemanth", url: "http://h3manth.com/";, location : "Earth",
get : function() {} };
Object.keys(info)
["name", "url", "location", "get"]
Now, it's not clear about the 'type' of the keys; name is a String, where as
get is a function.
Compared to something like inspect module in python that give o/p like :
('__delslice__',<method-wrapper '__delslice__' of list object at 0x1005252d8>)
Python's repr convention is missed in JS, but instead of trying to force
everything into a standard string representation, how about just building on
ES5 (already mailed to you, sharing with list here):
js> o = {p:1, q:2, get r(){return 3}}
({p:1, q:2, get r () {return 3;}})
js> function inspect(o) {
var a = [];
Object.getOwnPropertyNames(o).forEach(function (k) {
a.push(Object.getOwnPropertyDescriptor(o, k));
You probably want to make the above line:
a.[k] = Object.getOwnPropertyDescriptor(o,k}
Confusing .[ typo there :-P.
This should give you a descriptor that can be passed back into
Object.defineProperties
Also initialize a to { }.
Let me redo the REPL session:
js> o = {p:1, q:2, get r(){return 3}}
({p:1, q:2, get r () {return 3;}})
js> function inspect(o) {
var r = {};
Object.getOwnPropertyNames(o).forEach(function (k) {
r[k] = Object.getOwnPropertyDescriptor(o, k);
});
return r;
}
js> d = inspect(o)
({p:{configurable:true, enumerable:true, value:1, writable:true},
q:{configurable:true, enumerable:true, value:2, writable:true},
r:{configurable:true, enumerable:true, get:(function () {return 3;}),
set:(void 0)}})
Thanks. Any reason this wasn't included in ES5 that you recall?
/be
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