大约有 30,000 项符合查询结果（耗时：0.0672秒） [XML]
Quicksort vs heapsort
... The most direct competitor of
quicksort is heapsort. Heapsort is
typically somewhat slower than
quicksort, but the worst-case running
time is always Θ(nlogn). Quicksort is
usually faster, though there remains
the chance of worst case performance
except in the introsort variant, whic...
AES Encryption for an NSString on the iPhone
...to does seem to work pretty decently... aside from the extra comma in each call to CCCrypt() which caused compile errors.
A later comment on that post includes this adapted code, which works for me, and seems a bit more straightforward. If you include their code for the NSData category, you can wri...
Ruby arrays: %w vs %W
...
That's a good article. I didn't realize you can make strings or other things the same way and the enclosing characters can be whatever you want. For example, %w&readable af&
– Dex
Jun 29 '19 at 7:03
...
Why are arrays covariant but generics are invariant?
...er, if array types were treated as invariant, it would only be possible to call these functions on an array of exactly the type Object[]. One could not, for example, shuffle an array of strings.
Therefore, both Java and C# treat array types covariantly. For instance, in C# string[] is a subtype...
How to write a simple database engine [closed]
...
I recommend to read code of SQLite 2.5.0: github.com/davideuler/SQLite-2.5.0-for-code-reading, it is an early version of SQLite which can be compiled and run on modern GCC (I've tested it on MacOS 10.13 and Debian 8)
– david euler
Mar 17 '18 ...
Valid content-type for XML, HTML and XHTML documents
...p.
XHTML: application/xhtml+xml, or only if following HTML compatbility guidelines, text/html. See the W3 Media Types Note.
XML: text/xml, application/xml (RFC 2376).
There are also many other media types based around XML, for example application/rss+xml or image/svg+xml. It's a safe bet that any...
How can I force WebKit to redraw/repaint to propagate style changes?
...
I found some complicated suggestions and many simple ones that didn’t work, but a comment to one of them by Vasil Dinkov provided a simple solution to force a redraw/repaint that works just fine:
sel.style.display='none';
sel.offsetHeight; // no need to store this anywhere, the referen...
Bootstrap modal appearing under background
... ways to do this:
Easiest way is to just move the modal div so it is outside any elements with special positioning. One good place might be just before the closing body tag </body>.
Alternatively, you can remove position: CSS properties from the modal and its ancestors until the problem goe...
How to insert a line break in a SQL Server VARCHAR/NVARCHAR string
I didn't see any similar questions asked on this topic, and I had to research this for something I'm working on right now. Thought I would post the answer for it in case anyone else had the same question.
...
More elegant way of declaring multiple variables at the same time
...ssion following ** into a set of keyword arguments which are passed to the called function. This is certainly a reliable way to create dictionaries, and people seem to be at least accepting of this idiom, but I suspect that some may consider it Unpythonic. </disclaimer>
Yet another approa...