大约有 47,000 项符合查询结果（耗时：0.0587秒） [XML]
When should I use Write-Error vs. Throw? Terminating vs. non-terminating errors
...be used if you want to inform the user of a non-critical error. By default all it does is print an error message in red text on the console. It does not stop a pipeline or a loop from continuing. Throw on the other hand produces what is called a terminating error. If you use throw, the pipeline and/...
The application was unable to start correctly (0xc000007b)
...at you should run the 32 bit version of dependency walker, and ensure that all loaded DLLs are 32 bit. If you try to run the 64 bit version dependency walker, it will happily load the 64 bit DLLs, such as VCRedist, even if your also have their 32 bit versions.
– liorda
...
How to get first character of string?
...le what you say is true, unfortunately charAt() without any parameters actually runs about 10x slower than chartAt(0) in Firefox as of Firefox 71. See for yourself here: jsperf.com/testing-the-first-character-in-a-string/1
– Stephen M Irving
Dec 16 '19 at 21:54...
Under what circumstances are linked lists useful?
...he new Thread Pool, (with the local "queues" implemented as stacks, essentially). (The other main supporting structure being ConcurrentQueue<T>.)
The new Thread Pool in turn provides the basis for the work scheduling of the new
Task Parallel Library.
So they can certainly be useful - a link...
Prevent scroll-bar from adding-up to the Width of page on Chrome
I have a small issue trying to keep my .html pages at a consistent width on Chrome,
For example I have a page (1) with lots of contents that overflows the viewport's (right word?) height, so there's a vertical scroll-bar on that page (1). On page (2) i have the same layout (menus, divs,...etc) but l...
How can I access getSupportFragmentManager() in a fragment?
...
You can directly call
getFragmentManager()
to get the fragment manager.
or
In your fragment,
Create field :
private FragmentActivity myContext;
override onAttach method of your fragment :
@Override
public void onAttach(Activity ...
Algorithm to return all combinations of k elements from n
... set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous and avoid repetitions. There are many of these for different uses. Do we want to maximize the differences between successive combinations? minimize?...
JOIN two SELECT statement results
...COUNT(*) AS '# Late' FROM Table WHERE Age > Palt GROUP BY ks
Or UNION ALL if you want duplicates:
SELECT ks, COUNT(*) AS '# Tasks' FROM Table GROUP BY ks
UNION ALL
SELECT ks, COUNT(*) AS '# Late' FROM Table WHERE Age > Palt GROUP BY ks
...
NSOperation vs Grand Central Dispatch
...ed first, but as of 10.5 and iOS 2, NSOperationQueue and friends are internally implemented using GCD.
In general, you should use the highest level of abstraction that suits your needs. This means that you should usually use NSOperationQueue instead of GCD, unless you need to do something that NSOp...
Removing multiple classes (jQuery)
...
There are many ways can do that!
jQuery
remove all class
$("element").removeClass();
OR
$("#item").removeAttr('class');
OR
$("#item").attr('class', '');
OR
$('#item')[0].className = '';
remove multi class
$("element").removeClass("class1 ... classn");
OR
$("element").re...