大约有 23,000 项符合查询结果（耗时：0.0358秒） [XML]
REST API 404: Bad URI, or Missing Resource?
...n error (404 or whatever) for any query that returns empty results. No database will do that and usually you don't want to report an empty result as an unexpected condition to the user. Example: you query your api to check if there is an appointment scheduled for the next 30 minutes. If there is non...
Android OpenGL ES and 2D
...enGLE quick! It only took a few months and had a custom coordinate system based on the Cartesian coordinate system. I was able to render 3D object no camera using Augmented Reality techniques.
I started with only programming experience, with no OpenGL experience. I used Ray Wenderlich's tutori...
How to cancel a Task in await?
...s introduced in .NET 4.0 and is largely unchanged since then) and the Task-Based Asynchronous Pattern, which provides guidelines on how to use CancellationToken with async methods.
To summarize, you pass a CancellationToken into each method that supports cancellation, and that method must check it ...
'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?
...umPy arrays (of length > 1) have no truth value as this prevents vector-based logic confusion.
Example 4 is simply a vectorized bit and operation.
Bottom Line
If you are not dealing with arrays and are not performing math manipulations of integers, you probably want and.
If you have vectors o...
Why is the .bss segment required?
...be filled up with a lot of zeroes, increasing ROM size significantly.
RAM-based executables work similarly, though of course they have no true ROM.
Also, memset is likely some very efficient inline assembler, meaning that the startup copy-down can be executed faster.
...
Do fragments really need an empty constructor?
...g why.
If you check: https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/app/Fragment.java
You will see the instantiate(..) method in the Fragment class calls the newInstance method:
public static Fragment instantiate(Context context, String fname, @Nullable Bundl...
What is WEB-INF used for in a Java EE web application?
... Servlet API requirements, you can organize the other parts of your webapp based upon what you need. - You can put your resources (JSP files, plain text files, script files) in your application root directory. But then, people can access them directly from their browser, instead of their requests be...
What is the difference between customErrors and httpErrors?
... this section as well as customErrors section to handle custom http errors based on their file extensions if requested page extension register with ISAPI dll (.aspx, ashx, .asmx, .svc etc) like index.aspx then IIS pick up setting from customeErrors section else it pick up setting from httpErrors (II...
Create a custom View by inflating a layout?
...
A bit old, but I thought sharing how I'd do it, based on chubbsondubs' answer:
I use FrameLayout (see Documentation), since it is used to contain a single view, and inflate into it the view from the xml.
Code following:
public class MyView extends FrameLayout {
publi...
CSS triangle custom border color
...(though at least on my monitor I see no difference between the actual trig-based values or .5px or even .1px for that matter).
Borders greater than 1px (well, their appearance that way) don't seem to work well. Or at least I haven't found the solution, though see below for a less-than-optimal way to...