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How to check if an object is a list or tuple (but not string)?
... @stantonk, thank you for saying so, but I think that there was already an accepted answer when I wrote this and I don't really expect the accepted answer to be changed.
– steveha
May 25 '12 at 4:29
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Manually raising (throwing) an exception in Python
...racebacks. It's less efficient and more error prone. And if you're using threading and sys.exc_info you may even get the wrong traceback (especially if you're using exception handling for control flow - which I'd personally tend to avoid.)
Python 3, Exception chaining
In Python 3, you can chain Ex...
How to close this ssh tunnel? [closed]
...
Best explanation I read in a while. This is very useful when accessing a remote database from locally installed environments like R for example. Works well with public / private key authentication. Not with passwords because I did not find a wa...
What is NoSQL, how does it work, and what benefits does it provide? [closed]
...m, will only take microseconds." -- can't I get the same non-transactional read perfomance in for example psql?
– Nakilon
Mar 28 '17 at 15:40
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Why do we need fibers
...which it is running on is suspended, and execution continues on the main thread. Next time you call next, it passes control to the fiber, the block returns, and an_iterator continues where it left off.
It would be instructive to think of what would be required to do this without fibers. EVERY class...
C++实现一款简单完整的聊天室服务器+客户端 - C/C++ - 清泛网 - 专注C/C++及内核技术
...#ifndef _MESSAGE_BUF_INCLUDE_
#define _MESSAGE_BUF_INCLUDE_
#include <pthread.h>
#define MESSAGE_COUNT 16
#define MESSAGE_LENGTH 2048
class MessageBuffer{
private:
pthread_mutex_t mutex;//访问缓冲的互斥量
pthread_cond_t condition;//访问缓冲区的条件变量
//消息缓冲...
Seeding the random number generator in Javascript
...uivalent to Math.random(), if you want random numbers of a specific range, read this article on MDN. If you only want the raw bits, simply remove the final division operation.
Another thing to note are the limitations of JS. Numbers can only represent whole integers up to 53-bit resolution. And whe...
What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?
...he ClassLoader however when trying to load the class, it ran into an error reading the class definition. This typically happens when the class in question has static blocks or members which use a Class that's not found by the ClassLoader. So to find the culprit, view the source of the class in quest...
Optimizing away a “while(1);” in C++0x
... never writes to count2. Thus
it could be run in parallel with another thread that accesses or
updates count2. This is no longer safe with the transformed version
which does access count2 in spite of the infinite loop. Thus the
transformation potentially introduces a data race.
In cases...
Difference between a “coroutine” and a “thread”?
What are the differences between a "coroutine" and a "thread"?
6 Answers
6
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