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What's the difference between a catalog and a schema in a relational database?
...ews and domains of the
Information Schema.
Database Language SQL, (Proposed revised text of DIS 9075), p 45
From the SQL point of view :
A catalog is often synonymous with database. In most SQL dbms, if you query the information_schema views, you'll find that values in the "table_catalog" c...
What is the fastest integer division supporting division by zero no matter what the result is?
...metic and the use of condition flags are invented in hardware for this purpose. In general condition flags are only accessible in C through using idiom. That is why it so hard to make a portable multiple precision integer library in C without resorting to (inline) assembly. My guess is that most dec...
Link to all Visual Studio $ variables
...
Try this MSDN page: Macros for Build Commands and Properties
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Design by contract using assertions or exceptions? [closed]
...ulfilled, before starting to work on its responsibilities, right? The two most prominent ways to do these checks are by assert and by exception .
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When should one use a spinlock instead of mutex?
...e lock won't be unlocked either. IOW, a spinlock wastes only CPU time on those systems for no real benefit. If the thread was put to sleep instead, another thread could have ran at once, possibly unlocking the lock and then allowing the first thread to continue processing, once it woke up again.
On...
How Python web frameworks, WSGI and CGI fit together
I have a Bluehost account where I can run Python scripts as CGI. I guess it's the simplest CGI, because to run I have to define the following in .htaccess :
...
Reference requirements.txt for the install_requires kwarg in setuptools setup.py file
...uirements.txt instead.
Alternatively, even if not advised, it is still possible to parse the requirements.txt file (if it doesn't refer any external requirements by URL) with the following hack (tested with pip 9.0.1):
install_reqs = parse_requirements('requirements.txt', session='hack')
This ...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术
...通信系统不同，几乎没有分布式通信系统的什么资料，ØMQ(ZeroMQ)是感兴趣的读者少数能请举出... 介绍 与其他的基于常规理论基础的（集中）通信系统不同，几乎没有分布式通信系统的什么资料，ØMQ(ZeroMQ)是感兴趣的读...
Client-server synchronization pattern / algorithm?
...at how distributed change management works. Look at SVN, CVS and other repositories that manage deltas work.
You have several use cases.
Synchronize changes. Your change-log (or delta history) approach looks good for this. Clients send their deltas to the server; server consolidates and distri...
docker mounting volumes on host
...ainer and store any files created or edited inside that directory on your hosts disk outside the container file structure, bypassing the union file system.
The idea is that your volumes can be shared between your docker containers and they will stay around as long as there's a container (running or...