大约有 45,000 项符合查询结果（耗时：0.0704秒） [XML]
Printing a variable memory address in swift
Is there anyway to simulate the [NSString stringWithFormat:@"%p", myVar] , from Objective-C, in the new Swift language?
15...
Canvas width and height in HTML5
Is it possible to fix the width and height of an HTML5 canvas element?
4 Answers
4
...
Do I need to heartbeat to keep a TCP connection open?
...
The connection should remain open regardless but yes it's often common to see protocols implement a heartbeat in order to help detect dead connections, IRC with the PING command for example.
share
...
How to use LINQ to select object with minimum or maximum property value
I have a Person object with a Nullable DateOfBirth property. Is there a way to use LINQ to query a list of Person objects for the one with the earliest/smallest DateOfBirth value.
...
What is the difference between HTTP status code 200 (cache) vs status code 304?
I'm using the Google "Page Speed" plug-in for Firefox to access my web site.
5 Answers
...
List vs List
...ing>>
but not a
List<Map<String,String>>
So:
void withWilds( List<? extends Map<String,String>> foo ){}
void noWilds( List<Map<String,String>> foo ){}
void main( String[] args ){
List<HashMap<String,String>> myMap;
withWilds( myMa...
Programmatically obtain the phone number of the Android phone
... caveats to be aware of. This can return null or "" or even "???????", and it can return a stale phone number that is no longer valid. If you want something that uniquely identifies the device, you should use getDeviceId() instead.
...
Is there a way to @Autowire a bean that requires constructor arguments?
... possible. One of the beans that I need to autowire requires arguments to its constructor. I've looked through the Spring docs, but cannot seem to find any reference to how to annotate constructor arguments.
...
SQLite error 'attempt to write a readonly database' during insert?
I have a SQLite database that I am using for a website. The problem is that when I try to INSERT INTO it, I get a PDOException
...
How to put a UserControl into Visual Studio toolBox
...ade a usercontrol in my project, and after building project, I need to put it in my toolbox, and use it as a common control. but i can't. the UserControl is in my project namespace, and I tried Choose Item in right click menu, but I didn't find a way to add it.
...