大约有 14,600 项符合查询结果（耗时：0.0394秒） [XML]
Handling a Menu Item Click Event - Android
I want to create an intent that starts a new activity once a Menu Item is clicked, but I'm not sure how to do this. I've been reading through the android documentation, but my implementation isn't correct..and some guidance in the right direction would help. I've listed my code below and commented o...
What is the difference between List (of T) and Collection(of T)?
...gt; c = new Collection<long>();
Stopwatch s = new Stopwatch();
s.Start();
for (long i = 0; i <= 10000000; i++)
{
c.Add(i);
}
s.Stop();
MessageBox.Show("collect " + s.ElapsedMilliseconds.ToString());
List<long> l = new List<long>();
Stopwatch s2 = new Stopw...
What does Class mean in Java?
...en leads to confusion and errors, because, when you see it first, then you start believing, <?> is a wildcard for any java type. Which is .. not true. <?> is the unknown type, a slight and nasty difference.
It's not a problem when you use it with Class. Both lines work and compile:
Cla...
How to show and update echo on same line
...I want to use for this: \r. Yes, carriage return would send me back to the start and it will visually look like I am updating on the same line.
So the echo line would look like this:
echo -ne "Movie $movies - $dir ADDED!"\\r
I had to escape the escape symbol so Bash would not kill it. that is why...
Xcode 4 - detach the console/log window
...tab.
Tell Xcode to open a tab called "Debugger" when "Run Pauses" or "Run Starts". Then run it, and break that Debugging tab out into another window (drag it off the tab bar into its own window by just letting it drop outside the current window). Now reform it to your hearts content; it will stay ...
Is it possible for a computer to “learn” a regular expression by user-provided examples?
...-> "You are right, your is the best way to do things, you should always start from specifications when possible"
– Fabiano Tarlao
Feb 12 '16 at 11:59
2
...
What's is the difference between train, validation and test set, in neural networks?
...rror decreases. The training is stopped at the moment the validation error starts to rise. The weight configuration at this point indicates a model, which predicts the training data well, as well as the data which is not seen by the network . But because the validation data actually affects the weig...
Why should a function have only one exit-point? [closed]
...scopes.
Another is that you can check preconditions and exit early at the start of a method, so that you know in the body of the method that certain conditions are true, without the entire body of the method being indented 5 miles off to the right. This usually minimises the number of scopes you ha...
HTTP vs HTTPS performance
...rs. Longer sessions will mean the handshaking cost will be incurred at the start of the session, but subsequent requests will have relatively low overhead.
Client caching can be done at several steps, anywhere from a large-scale proxy server down to the individual browser cache. Generally HTTPS con...
How large should my recv buffer be when calling recv in the socket library
...your application-level protocol. Commonly this is either a length prefix (starting each message with the length of the message) or an end-of-message delimiter (which might just be a newline in a text-based protocol, for example). A third, lesser-used, option is to mandate a fixed size for each mes...