Basic Usage of Boost MultiIndex Containers

Just take a simple note here.
The Boost Multi-index Containers Library provides a class template named multi_index_container which enables the construction of containers maintaining one or more indices with different sorting and access semantics.

Output:

To use with pointer values, only limited change needed as highlighted:

Enabing Pretty Permalinks

Well.. long time no see. Just have some time to optimize the site for better analysis.

According to the official tutorial:
1. Enable mod_rewrite in apache2.

2. Enable FollowSymLinks option, which is default.
3. Enable FileInfo directives. Edit /etc/apache2/sites-available/yoursite.com.conf, add:

4. Restart apache:

Updated Dec 31, 2015:
Enabling mod_rewrite rewrites all requests including the one used by mod_status. To disable this, add a rule to the .htaccess file.

Then, change its user & group attributes to prevent overwriting from apache.

3 New Plugins Installed

Just added another personal site for one of my friends. So another chance to speed up loading for my own site, from mainland china >.<

1. Disable google fonts: Remove Google Fonts References

2. Use local avatar: WP User Avatar

3. Use local emoji: WP Local Emoji (installed, but not activated.)

Database Access Layer in C++

We have JDBC in Java… and SOCI in C++… Well, it’s not so easy as it should be. To build with cmake:

The documents seem outdated, many options do not work. Just managed to figure out from the *.cmake source files. You can also download the oracle instant client SDK, and re-arrange the directory structure for build.

Code snippet I extracted from its unit tests:

Updated Apr 20, 2015:

1. Under RHEL5/CentOS5, I got errors like:

It’s due to SELinux security feature. Simply workaround it with:

2. Oracle uses oraociei11.dll or libociei.so for client data. They are both large files(110+MB), since they support multiple languages. Instead, you can use oraociicus11.dll(30+MB) or libociicus.so(10-MB). These files contain only English support.

Mount Samba Share as a Non-root User

I used to access windows share folders directly in nautilus, or mount them like:

The problem is, they can be accessed only by root. The solution is adding a simple uid option like:

See: http://wiki.centos.org/TipsAndTricks/WindowsShares

Updated June 1, 2015:

You may encounter 121 error like:

It’s a Windows side issue, set following registry value to 3. This value tells Windows to prioritize file sharing over reducing memory usage.

Reboot (or just restart the “Server” service in services.msc). Your problem should now be solved.

See: https://boinst.wordpress.com/2012/03/20/mount-cifs-cannot-allocate-memory-mounting-windows-share/