大约有 32,000 项符合查询结果（耗时：0.0314秒） [XML]
What is more efficient? Using pow to square or just multiply it with itself?
...
I tested the performance difference between x*x*... vs pow(x,i) for small i using this code:
#include <cstdlib>
#include <cmath>
#include <boost/date_time/posix_time/posix_time.hpp>
inline boost::posix_time::ptime now()
{
return boost::posix_time::micro...
What's the difference between ASCII and Unicode?
...
ASCII defines 128 characters, which map to the numbers 0–127. Unicode defines (less than) 221 characters, which, similarly, map to numbers 0–221 (though not all numbers are currently assigned, and some are reserved).
Unicode is a superset of ASCII, and the numbers 0–127 have th...
Getters \ setters for dummies
...
BeejorBeejor
5,4753434 silver badges2727 bronze badges
1
...
OwinStartup not firing
...e I was able to do so before. I tried to open an app in a browser, then in VS2013 to use "Debug-> Attach to Process", and then to reload a page in a browser. VS didn't stop. I know that OWIN Startup is executing: I put some logging into it for debug purposes. It's like back in a dark age of inter...
What are the differences between a multidimensional array and an array of arrays in C#?
... 15.215 15.489 14.407 13.691 14.695 14.398 14.551 14.252
25.782 27.484 25.711 20.844 19.607 20.349 25.861 26.214 19.677 20.171
5.050 5.085 6.412 5.225 5.100 5.751 6.650 5.222 6.770 5.305
The first row are timings of jagged arrays, the second shows multidimen...
Git-Based Source Control in the Enterprise: Suggested Tools and Practices?
...
27
I'm the SCM engineer for a reasonably large development organization, and we converted to git f...
Why git can't remember my passphrase under Windows
...
27
Every time I set up a new desktop I forget these instructions, so I'm adding another answer her...
C# Class naming convention: Is it BaseClass or ClassBase or AbstractClass
..., section 6.2 on Base Classes: msdn.microsoft.com/en-us/library/ms229003(v=vs.110).aspx They say to avoid the Base suffix: "AVOID naming base classes with a "Base" suffix if the class is intended for use in public APIs."
– cwills
Dec 12 '16 at 20:55
...
How to determine the version of the C++ standard used by the compiler?
...
vs2017 gives __cplusplus's value 199711
– Al Mamun
Dec 13 '17 at 11:18
5
...
How to use timeit module
...
275
The way timeit works is to run setup code once and then make repeated calls to a series of sta...