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Why is it wrong to use std::auto_ptr with standard containers?
...;X> > vecX;
vecX.push_back(new X);
std::auto_ptr<X> pX = vecX[0]; // vecX[0] is assigned NULL.
To overcome this limitation, you should use the std::unique_ptr, std::shared_ptr or std::weak_ptr smart pointers or the boost equivalents if you don't have C++11. Here is the boost librar...
Create a shortcut on Desktop
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answered Feb 5 '11 at 20:30
Rustam IrzaevRustam Irzaev
1,55222 gold badges1616 silver badges1818 bronze badges
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Notifier 通知扩展：功能强大的Android通知管理工具，支持通知通道、意图、...
...
版本
修改内容
1.0 (2020-09-07)
初始版本
2.0 (2021-03-08)
完全修订和扩展版本
2.1 (2021-03-16)
某些方法声明为 public，以便 KeepAlive 扩展可以调用它们（对功能...
Redirecting stdout to “nothing” in python
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edited Dec 30 '14 at 0:03
Community♦
111 silver badge
answered Jul 18 '11 at 16:16
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How do I check if an object has a specific property in JavaScript?
...odern browsers support it. (It was missing in older versions of Safari - 2.0.1 and older - but those versions of the browser are rarely used any more.)
If what you're looking for is if an object has a property on it that is iterable (when you iterate over the properties of the object, it will appea...
is there an virtual environment for node.js?
...r easy. Just create a package.json file:
{ "name": "yourapp", "version": "0.0.1", "dependencies": {"jade": "0.4.1"}}
and then run:
npm bundle vendor
or if your npm version is >= 1.0 run:
npm install
to freeze into the vendor directory. and then use:
require.paths.unshift('./vendor');
...
Why should I declare a virtual destructor for an abstract class in C++?
...mory leak.
For example
class Interface
{
virtual void doSomething() = 0;
};
class Derived : public Interface
{
Derived();
~Derived()
{
// Do some important cleanup...
}
};
void myFunc(void)
{
Interface* p = new Derived();
// The behaviour of the next line is undefined...
What is the difference between using IDisposable vs a destructor in C#?
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answered Dec 3 '08 at 23:09
Marc Gravell♦Marc Gravell
888k227227 gold badges23562356 silver badges27202720 bronze badges
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Looping through localStorage in HTML5 and JavaScript
...entation-defined but constant until you add or remove keys).
for (var i = 0; i < localStorage.length; i++){
$('body').append(localStorage.getItem(localStorage.key(i)));
}
If the order matters, you could store a JSON-serialized array:
localStorage.setItem("words", JSON.stringify(["Lorem", ...
Deserialize json object into dynamic object using Json.net
...
Json.NET allows us to do this:
dynamic d = JObject.Parse("{number:1000, str:'string', array: [1,2,3,4,5,6]}");
Console.WriteLine(d.number);
Console.WriteLine(d.str);
Console.WriteLine(d.array.Count);
Output:
1000
string
6
Documentation here: LINQ to JSON with Json.NET
See also JObj...