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程序员用数据思维教你如何追女生 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...也不清楚对方到底喜欢什么。我们程序员也会遇到这样的问题，但是我们有办法。
程序员的需求分析技能是谈恋爱的必杀技。给你一个手机号码，你可以知道她的QQ，微信，微博，然后进行“大数据分析”，朋友圈里面喜欢发...
How do I debug Node.js applications?
...
I don't find the cpu reports from nodetime very helpful: 1. I just get a tree of methods, with no 'self' time. 2. Seems like the tree branches are trimmed below a certain number of precentage. Those 2 makes it very difficult to undestan...
谈谈创业公司技术的工作模式 - 资讯 - 清泛网 - 专注C/C++及内核技术
...、测试、运维不管做什么工作，都需要站在一定高度思考问题，既然创业就需要以创业的角度思考，这样对自己的职业发展有帮助，也可以做好产品。
在根据一个大需求技术总监和大家讨论，把模糊的东西逐步清晰化得到一个...
Are Java static calls more or less expensive than non-static calls?
...n variable, and looping if not true.
I suppose the results will vary from CPU to CPU, and from JVM to JVM, so give it a try and see what you get:
import java.io.*;
class StaticVsInstanceBenchmark
{
public static void main( String[] args ) throws Exception
{
StaticVsInstanceBenchma...
What is the most ridiculous pessimization you've seen? [closed]
...r than grabbing 16-bit values, and explain that to grab a 16-bit value the CPU had to make a 32-bit wide memory access and then mask out or shift the bits not needed for the 16-bit value.
share
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im...
Technically, why are processes in Erlang more efficient than OS threads?
...ch at known, controlled points and therefore don't have to save the entire CPU state (normal, SSE and FPU registers, address space mapping, etc.).
Erlang processes use dynamically allocated stacks, which start very small and grow as necessary. This permits the spawning of many thousands — even mil...
How to measure time taken between lines of code in python?
...
If you want to measure CPU time, can use time.process_time() for Python 3.3 and above:
import time
start = time.process_time()
# your code here
print(time.process_time() - start)
First call turns the timer on, and second call tells you how m...
How do I read CSV data into a record array in NumPy?
...sing NumPy and Pandas, using pandas has a lot of advantages:
Faster
Less CPU usage
1/3 RAM usage compared to NumPy genfromtxt
This is my test code:
$ for f in test_pandas.py test_numpy_csv.py ; do /usr/bin/time python $f; done
2.94user 0.41system 0:03.05elapsed 109%CPU (0avgtext+0avgdata 50206...
What is the facade design pattern?
...kipedia has a great example of Facade pattern.
/* Complex parts */
class CPU {
public void freeze() { ... }
public void jump(long position) { ... }
public void execute() { ... }
}
class Memory {
public void load(long position, byte[] data) { ... }
}
class HardDrive {
public b...
Unable to load DLL (Module could not be found HRESULT: 0x8007007E)
...ependencyWalker. It told me that the not all the dependencies had the same CPU type (x86/x64). I copied all the files that had the same CPU type to my application's bin folder, and that resolved the problem.
– DiligentKarma
May 16 '13 at 17:58
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