大约有 37,000 项符合查询结果（耗时：0.0674秒） [XML]
Save classifier to disk in scikit-learn
...
205
Classifiers are just objects that can be pickled and dumped like any other. To continue your ex...
How to get exit code when using Python subprocess communicate method?
...(openRTSP + opts.split(), stdout=sp.PIPE)
streamdata = child.communicate()[0]
rc = child.returncode
(*) This happens because of the way it's implemented: after setting up threads to read the child's streams, it just calls wait.
...
What is this crazy C++11 syntax ==> struct : bar {} foo {};?
...tandard abstract UDT (User-Defined Type):
struct foo { virtual void f() = 0; }; // normal abstract type
foo obj;
// error: cannot declare variable 'obj' to be of abstract type 'foo'
Let's also recall that we can instantiate the UDT at the same time that we define it:
struct foo { foo() { cout &l...
Move capture in lambda
...ariables can be initialized with anything like so:
auto lambda = [value = 0] mutable { return ++value; };
In C++11 this is not possible yet, but with some tricks that involve helper types. Fortunately, the Clang 3.4 compiler already implements this awesome feature. The compiler will be released D...
Reset the database (purge all), then seed a database
...
280
I use rake db:reset which drops and then recreates the database and includes your seeds.rb file....
How to easily initialize a list of Tuples?
...
305
c# 7.0 lets you do this:
var tupleList = new List<(int, string)>
{
(1, "cow"),...
How to calculate moving average using NumPy?
...ret[n:] - ret[:-n]
return ret[n - 1:] / n
>>> a = np.arange(20)
>>> moving_average(a)
array([ 1., 2., 3., 4., 5., 6., 7., 8., 9., 10., 11.,
12., 13., 14., 15., 16., 17., 18.])
>>> moving_average(a, n=4)
array([ 1.5, 2.5, 3.5, 4....
When is TCP option SO_LINGER (0) required?
...
|
edited Apr 30 '15 at 11:18
OJ.
26.7k55 gold badges5252 silver badges6969 bronze badges
ans...
How to use QueryPerformanceCounter?
...
#include <windows.h>
double PCFreq = 0.0;
__int64 CounterStart = 0;
void StartCounter()
{
LARGE_INTEGER li;
if(!QueryPerformanceFrequency(&li))
cout << "QueryPerformanceFrequency failed!\n";
PCFreq = double(li.QuadPart)/1000.0;
Q...
Rsync copy directory contents but not directory itself
...
answered Nov 30 '13 at 13:58
ProtostomeProtostome
4,32944 gold badges2626 silver badges4141 bronze badges
...