大约有 40,000 项符合查询结果（耗时：0.0618秒） [XML]
Configure Flask dev server to be visible across the network
...hen I run an app in dev mode ( http://localhost:5000 ), I cannot access it from other machines on the network (with http://[dev-host-ip]:5000 ). With Rails in dev mode, for example, it works fine. I couldn't find any docs regarding the Flask dev server configuration. Any idea what should be configu...
Why are elementwise additions much faster in separate loops than in a combined loop?
...ch large allocations are requested, the allocator will request fresh pages from the OS. Therefore, there is a high chance that large allocations will appear at the same offset from a page-boundary.
Here's the test code:
int main(){
const int n = 100000;
#ifdef ALLOCATE_SEPERATE
double *a1 =...
Creating java date object from year,month,day
...
Beware, the months used to be numbered from zero in Java 7. Use constants to avoid trouble.
– jediz
Jun 6 '18 at 9:31
add a comment
...
Position of least significant bit that is set
.../optimisation discussion attached. My favourite solution for your problem (from that site) is «multiply and lookup»:
unsigned int v; // find the number of trailing zeros in 32-bit v
int r; // result goes here
static const int MultiplyDeBruijnBitPosition[32] =
{
0, 1, 28, 2, 29, 14,...
Redirect to named url pattern directly from urls.py in django?
In Django, how can I do a simple redirect directly from urls.py? Naturally I am a well organized guy, favoring the DRY principle, so I would like to get the target based on it's named url pattern, rather than hard coding the url.
...
Minimizing NExpectation for a custom distribution in Mathematica
This relates to an earlier question from back in June:
1 Answer
1
...
Generating random numbers in Objective-C
...and(3) and
random(3).
The arc4random_stir() function reads data from /dev/urandom and uses it to permute the S-Boxes via
arc4random_addrandom().
There is no need to call arc4random_stir() before using arc4random(), since arc4random() automatically
initializes itself.
EXAM...
Calculating Pearson correlation and significance in Python
...
You can have a look at scipy.stats:
from pydoc import help
from scipy.stats.stats import pearsonr
help(pearsonr)
>>>
Help on function pearsonr in module scipy.stats.stats:
pearsonr(x, y)
Calculates a Pearson correlation coefficient and the p-value f...
How to grant remote access permissions to mysql server for user?
...
This grants root access with the same password from any machine in *.example.com:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%.example.com'
IDENTIFIED BY 'some_characters'
WITH GRANT OPTION;
FLUSH PRIVILEGES;
If name resolution is not going to work, you may also ...
Remove a string from the beginning of a string
... came in at .17 sec, whereas (substr($str, 0, strlen($prefix)) == $prefix) from the accepted answer was more like .37
– billynoah
Jul 31 '15 at 5:33
add a comment
...