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boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...图：
multi_index_container性能测试
来源于libGod官网http://www.libgod.com/
boost中有个multi_index_container，感觉比较好用，但不知道性能怎么样。今天特意测试了下他的插入，查找，删除的性能。
测试代码：
#include <cstdio>
#include <ma...
Differences between .NET 4.0 and .NET 4.5 in High level in .NET
...s before you run
your application.
New asynchronous streaming support.
New HTTPS protocol mapping to make it easier to expose an endpoint
over HTTPS with Internet Information Services (IIS).
Ability to generate metadata in a single WSDL document by appending
?singleWSDL to the service URL.
Websocket...
What's the Point of Multiple Redis Databases?
...hinks it's a bad idea to use multiple DBs in Redis. See his comment here:
https://groups.google.com/d/topic/redis-db/vS5wX8X4Cjg/discussion
I understand how this can be useful, but unfortunately I consider
Redis multiple database errors my worst decision in Redis design at
all... without ...
Can I get JSON to load into an OrderedDict?
... cPython implementation has preserved the insertion order of dictionaries (https://mail.python.org/pipermail/python-dev/2016-September/146327.html). This means that the json library is now order preserving by default. Observe the difference in behaviour between python 3.5 and 3.6. The code:
import ...
Java 8 Iterable.forEach() vs foreach loop
...DIT: Looks like some of the original proposals for lambdas (such as http://www.javac.info/closures-v06a.html Google Cache) solved some of the issues I mentioned (while adding their own complications, of course).
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SQL left join vs multiple tables on FROM line?
...//en.wikipedia.org/wiki/SQL. The complete standard can be viewed at http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt .
It took many years before database companies adopted the SQL-92 standard.
So the reason why the second method is preferred, it is the SQL standard according the ANSI and ...
How do you force a CIFS connection to unmount
...en accessed, and will unmount it afterworlds.
There is a good tutorial at www.howtoforge.net
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Truncating all tables in a Postgres database
...rn? You would probably have to write a PL/pgSQL script to do this.
http://www.postgresql.org/docs/8.3/static/plpgsql-statements.html (section 38.5.4. Executing Dynamic Commands)
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Using sections in Editor/Display templates
.../resource/etc injection until the end of the page
/// <para>@via https://stackoverflow.com/a/14127332/1037948 and http://jadnb.wordpress.com/2011/02/16/rendering-scripts-from-partial-views-at-the-end-in-mvc/ </para>
/// </summary>
private class DelayedInjectionBlock : I...
How do I perform a Perl substitution on a string while keeping the original?
...
Another pre-5.14 solution: http://www.perlmonks.org/?node_id=346719 (see japhy's post)
As his approach uses map, it also works well for arrays, but requires cascading map to produce a temporary array (otherwise the original would be modified):
my @orig = ('...