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Why do stacks typically grow downwards?
...n (because I didn't design them). My thoughts on the matter are that early CPUs got their original program counter set to 0 and it was a natural desire to start the stack at the other end and grow downwards, since their code naturally grows upward.
As an aside, note that this setting of the prog...
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...
How to debug a GLSL shader?
...
You can't easily communicate back to the CPU from within GLSL. Using glslDevil or other tools is your best bet.
A printf would require trying to get back to the CPU from the GPU running the GLSL code. Instead, you can try pushing ahead to the display. Instead ...
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...
Nodejs Event Loop
...'s perspective:
Script engine starts execution of the script.
Any time a CPU bound operation is encountered, it is executed inline (real machine), in its completeness.
Any time an I/O bound operation is encountered, the request, and its completion handler are registered with an 'event machinery' (...
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...
微博为什么限制140字(附短信70字限制考) - 创意 - 清泛网 - 专注C/C++及内核技术
微博为什么限制140字(附短信70字限制考)问题的提出申请过那么多的微博，数申请网易微博的动机最不纯，因为它的字数限制不是传说中的140字，而是163个字。当年觉得很可爱，于是就注...问题的提出
申请过那么多的微博，数申...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网 - 专注IT技能提升
...列化器去寻找未知对象的映射的途径。在Remoting中这样的问题不会存在，因为Remoting实际上是通过将一个类型传递给双方来进行类型匹配的。
那么KnowTypeAttribute到底用在什么地方呢？上边说了，当前类的未知类型。那什么又是当...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网 - 专注IT技能提升
...列化器去寻找未知对象的映射的途径。在Remoting中这样的问题不会存在，因为Remoting实际上是通过将一个类型传递给双方来进行类型匹配的。
那么KnowTypeAttribute到底用在什么地方呢？上边说了，当前类的未知类型。那什么又是当...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网 - 专注IT技能提升
...列化器去寻找未知对象的映射的途径。在Remoting中这样的问题不会存在，因为Remoting实际上是通过将一个类型传递给双方来进行类型匹配的。
那么KnowTypeAttribute到底用在什么地方呢？上边说了，当前类的未知类型。那什么又是当...