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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
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#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
//消息缓冲区，循环队列
char buf[MESSAGE_COUNT][MESSAGE_LENG...
When to use CouchDB over MongoDB and vice versa
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525
Of C, A & P (Consistency, Availability & Partition tolerance) which 2 are more importan...
How to create a file in memory for user to download, but not through server?
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20 Answers
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How to implement __iter__(self) for a container object (Python)
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122
I normally would use a generator function. Each time you use a yield statement, it will add an ...
Convert from java.util.date to JodaTime
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2 Answers
2
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An expression tree may not contain a call or invocation that uses optional arguments
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2 Answers
2
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Qt: can't find -lGL error
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Rando Hinn
1,1151717 silver badges3232 bronze badges
answered Aug 29 '13 at 6:15
Sayyed Hassan AmiriSayyed Hassan Amiri
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Windows batch files: .bat vs .cmd?
...erstand it, .bat is the old 16-bit naming convention, and .cmd is for 32-bit Windows, i.e., starting with NT. But I continue to see .bat files everywhere, and they seem to work exactly the same using either suffix. Assuming that my code will never need to run on anything older than NT, does it r...
How do I retrieve the number of columns in a Pandas data frame?
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312
Like so:
import pandas as pd
df = pd.DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [3...