大约有 40,000 项符合查询结果（耗时：0.0561秒） [XML]
Original purpose of ? [closed]
...purpose today because HTTP as we know it today is still, at least fundamentally, a stateless protocol.
This use case was actually first described in HTML 3.2 (I'm surprised HTML 2.0 didn't include such a description):
type=hidden
These fields should not be rendered and provide a means for servers t...
Passing arguments to C# generic new() of templated type
...tion you must constrain it with the "new" flag.
public static string GetAllItems<T>(...) where T : new()
However that will only work when you want to call the constructor which has no parameters. Not the case here. Instead you'll have to provide another parameter which allows for the cr...
Crash logs generated by iPhone Simulator?
...ept trying a few things in the app and it kept crashing). The crashes were all the same, so it wasn't an issue, but I am wondering if this is generally the case?
– Samik R
Dec 8 '12 at 7:46
...
$.focus() not working
...
Actually the example you gave for focusing on this site works just fine, as long as you're not focused in the console. The reason that's not working is simply because it's not stealing focus from the dev console. If you run the f...
Declaring an enum within a class
...uct Color
{
enum Type
{
Red, Green, Black
};
Type t_;
Color(Type t) : t_(t) {}
operator Type () const {return t_;}
private:
//prevent automatic conversion for any other built-in types such as bool, int, etc
template<typename T>
operator T () const;
};
...
Random record from MongoDB
...
Do a count of all records, generate a random number between 0 and the count, and then do:
db.yourCollection.find().limit(-1).skip(yourRandomNumber).next()
share
...
Difference between getDefaultSharedPreferences and getSharedPreferences
...es a default preference-file name. This default is set per application, so all activities in the same app context can access it easily as in the following example:
SharedPreferences spref = PreferenceManager.getDefaultSharedPreferences(this);
if (spref.contains("email")) {
String sEmailAdd...
How to filter object array based on attributes?
...art of the new ECMAScript 5th Edition standard, and can be found on almost all modern browsers.
For IE, you can include the following method for compatibility:
if (!Array.prototype.filter) {
Array.prototype.filter = function(fun /*, thisp*/) {
var len = this.length >>> 0;
if (ty...
Application_Error not firing when customerrors = “On”
...the HandleErrorAttribute tells MVC to look for an Error view and it never calls the Application_Error() method. I couldn't find documentation of this but it is explained in this answer on programmers.stackexchange.com.
To get the ApplicationError() method called for every unhandled exception, simpl...
Send string to stdin
...
@Pyrolistical yes! Especially useful when mastering for example a perl oneliner from a command line - easy editing of perl's arguments without the need much backward movements with a cursor. :)
– jm666
Feb 12 '1...