大约有 44,000 项符合查询结果（耗时：0.0278秒） [XML]
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...e256[p[3]];
You can extend this idea to 64-bit ints, or trade off memory for speed (assuming your L1 Data Cache is large enough), and reverse 16 bits at a time with a 64K-entry lookup table.
Others
Simple
unsigned int v; // input bits to be reversed
unsigned int r = v & 1; // r will b...
Authenticate with GitHub using a token
...o authenticate ( https://help.github.com/articles/creating-an-access-token-for-command-line-use ). I have tried this, but I still cannot push to GitHub. Please note, I am trying to push from an unauthenticated server (Travis-CI).
...
How can I use pickle to save a dict?
I have looked through the information that the Python docs give, but I'm still a little confused. Could somebody post sample code that would write a new file then use pickle to dump a dictionary into it?
...
How to initialize private static members in C++?
...tion, is not a definition. The templated const idiom provides a workaround for the cases where you need the definition in a header file. Another and simpler workaround is a function that produces the value of a local static constant. Cheers & hth.,
– Cheers and hth. - Alf
...
Gzip versus minify
...like 20-25%. This also seems to be what Yahoo got: developer.yahoo.com/performance/rules.html.
– Deepak
Sep 27 '12 at 21:22
1
...
static constructors in C++? I need to initialize private static objects
...-z). In java or C#, I can just make a "static constructor" that will run before I make any instances of the class, and sets up the static data members of the class. It only gets run once (as the variables are read only and only need to be set once) and since it's a function of the class it can acces...
Coding Conventions - Naming Enums
Is there a convention for naming enumerations in Java?
7 Answers
7
...
How to compare objects by multiple fields
...
Especially the cast (Person p) is important for chained comparators.
– membersound
Oct 6 '17 at 7:42
5
...
multiprocessing.Pool: When to use apply, apply_async or map?
I have not seen clear examples with use-cases for Pool.apply , Pool.apply_async and Pool.map . I am mainly using Pool.map ; what are the advantages of others?
...
Easy way to test a URL for 404 in PHP?
...r whatever is linked in $url. */
$response = curl_exec($handle);
/* Check for 404 (file not found). */
$httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE);
if($httpCode == 404) {
/* Handle 404 here. */
}
curl_close($handle);
/* Handle $response here. */
...