大约有 47,000 项符合查询结果（耗时：0.0842秒） [XML]
Why does integer division in C# return an integer and not a float?
...ogrammer to make this mistake of performing integer division when they actually meant to use floating point division, in actual practice integer division is a very common operation. If you are assuming that people rarely use it, and that every time you do division you'll always need to remember to ...
How to run Django's test database only in memory?
...time to run, so I'm looking for ways to speed that up. I'm considering installing an SSD , but I know that has its downsides too. Of course, there are things I could do with my code, but I'm looking for a structural fix. Even running a single test is slow since the database needs to be rebuilt / so...
Android Studio quick documentation always “fetching documentation”
...
The problem is Android Studio does not automatically update the source link of reference even when the documentation is already downloaded.
The default link in jdk.table.xml is http://developer.android.com/reference/ (android studio tries to connect to this online server ...
How do I scroll to an element within an overflowed Div?
... a good way to scroll to item #10, and then item #20? I know the height of all the items.
7 Answers
...
In which scenario do I use a particular STL container?
I've been reading up on STL containers in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of the...
Proper practice for subclassing UIView?
...Rect , and layoutSubviews . (I'm thinking in terms of setup and teardown callbacks.) In my case, I'm setting up my frame and internal views in layoutSubviews , but I'm not seeing anything onscreen.
...
ExecJS::RuntimeError on Windows trying to follow rubytutorial
...e on your system and removing this line is just ignoring that fact.
2) Installing Node.js / Running away - Many people seem to just end up installing Node.js and using that instead of the JavaScript runtime already on their system. While that is a valid option, it also requires additional software...
Do you need break in switch when return is used?
...se return instead of break...
break is optional and is used to prevent "falling" through all the other case statements. So return can be used in a similar fashion, as return ends the function execution.
Also, if all of your case statements are like this:
case 'foo':
$result = find_result(...)...
How to detect DIV's dimension changed?
...he div's dimension change event? and How to do that? I currently bind the callback function to the jQuery resize event on the target DIV, however, no console log is outputted, see below:
...
How to Copy Contents of One Canvas to Another Canvas Locally
I'd like to copy ALL contents of one canvas and transfer them to another all on the client-side. I would think that I would use the canvas.toDataURL() and context.drawImage() method to implement this but I am running into a few issues.
...