大约有 47,000 项符合查询结果（耗时：0.0573秒） [XML]
SELECT INTO a table variable in T-SQL
...ert statement, if you don't declare the columns explicitly, then they are mapped in the order declared in the original create table statement, just like select * does. So, location in the select statement is mapped to oldlocation in the @userData table because location is in position 2 in the resul...
Is there a Java API that can create rich Word documents? [closed]
I have a new app I'll be working on where I have to generate a Word document that contains tables, graphs, a table of contents and text. What's a good API to use for this? How sure are you that it supports graphs, ToCs, and tables? What are some hidden gotcha's in using them?
...
How to fix UITableView separator on iOS 7? [duplicate]
...screen.
[tableView setSeparatorInset:UIEdgeInsetsZero];
Note: If your app is also targeting other iOS versions, you should check for the availability of this property before calling it by doing something like this:
if ([tableView respondsToSelector:@selector(setSeparatorInset:)]) {
[tableV...
The case against checked exceptions
...re not even going to control the method arguments. The arguments made here apply to statically-typed languages only.)
So, what about checked exceptions?
Well here's one of the Java APIs you can use for opening a file.
try {
f = new FileInputStream("goodluckfindingthisfile");
}
catch (FileNotFou...
Is embedding background image data into CSS as Base64 good or bad practice?
...mages as data into CSS or HTML templates could be beneficial on mobile web apps. You should measure usage on a case-by-case basis -- I'm not advocating that data URIs should be used everywhere in a mobile web app.
Note that mobile browsers have limitations on total size of files that can be cached....
Why is creating a new process more expensive on Windows than Linux?
...quires a compatbility shim, checking whether software restriction policies apply, yada yada.
That said, I see the overall slowdown in the sum of all those little things that have to be done in addition to the raw creation of a process, VA space, and initial thread. But as said in the beginning -- d...
X-Frame-Options Allow-From multiple domains
...ocess of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.
The modern alternative is the Content-Security-Policy header, which along many other policies can white-list what URLs are allowed to host your page in a frame, using the frame-ancestors...
ActionController::InvalidAuthenticityToken
Below is an error, caused by a form in my Rails application:
24 Answers
24
...
Hand Coded GUI Versus Qt Designer GUI [closed]
I'm spending these holidays learning to write Qt applications. I was reading about Qt Designer just a few hours ago, which made me wonder : what do people writing real world applications in Qt use to design their GUIs? In fact, how do people design GUIs in general?
...
C# Events and Thread Safety
...sory performance testing to see the impact of the subscribe-empty-delegate approach, and here are my results:
Executing 50000000 iterations . . .
OnNonThreadSafeEvent took: 432ms
OnClassicNullCheckedEvent took: 490ms
OnPreInitializedEvent took: 614ms <--
Subscribing an empty delegate to...