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Why are unnamed namespaces used and what are their benefits?
...here */ }
The extra step using the empty body is important, so you can already refer within the namespace body to identifiers like ::name that are defined in that namespace, since the using directive already took place.
This means you can have free functions called (for example) help that can ex...
BigDecimal equals() versus compareTo()
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That's a very tricky portion of BigDecimal if you don't read the JavaDoc carefully. :) - We got some strange bugs from this until we realized the difference.
– Thomas
Jul 22 '11 at 8:04
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Differences between MySQL and SQL Server [closed]
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Just ran across this. Reading about all the differences makes me cringe. The basics are the same (at least in terms of understanding), but the specifics are very, very different.
– JasCav
May 13 '10 at 18:21...
Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
Boost.Asio的简单使用(Timer,Thread,Io_service类)2. 同步Timer本章介绍asio如何在定时器上进行阻塞等待(blocking wait).实现,我们包含必要的头文件.所有的asio类可以简单的通过include "...目录：
1. 同步Timer
2. 异步Timer
3. 回调函数的参数
4. 成...
SQL - Query to get server's IP address
...wered Qs for a while, so policy&rules here might have changed (will go read them up now...)
– Martin S. Stoller
Feb 25 '15 at 19:53
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What is the difference between a port and a socket?
...pprehension until Richard Dorman asked the question.
Having done a lot of reading and thinking, I'm now convinced that it would make a lot more sense to have a class TcpConnection with a constructor that takes two arguments, LocalEndpoint and RemoteEndpoint. You could probably support a single argu...
How can I measure the actual memory usage of an application or process?
...ed for it
can be misleading if pages are shared, for example by several threads or by using dynamically linked libraries
If you really want to know what amount of memory your application actually uses, you need to run it within a profiler. For example, Valgrind can give you insights about the amo...
Getting “bytes.Buffer does not implement io.Writer” error message
... // contents are the bytes buf[off : len(buf)]
off int // read at &buf[off], write at &buf[len(buf)]
bootstrap [64]byte // memory to hold first slice; helps small buffers avoid allocation.
lastRead readOp // last read operation, so that Unread* can work correctly....
Iterating through a range of dates in Python
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@Ber: I don't like it at all; it's DOUBLY bad. You ALREADY had an iteration! By wrapping the complained-about constructs in a generator, you have added even more execution overhead plus diverted the user's attention to somewhere else to read your 3-liner's code and/or docs. -2
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retrieve links from web page using python and BeautifulSoup [closed]
....urlopen('http://www.nytimes.com')
dom = lxml.html.fromstring(connection.read())
for link in dom.xpath('//a/@href'): # select the url in href for all a tags(links)
print link
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