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When installing the XMPP server ejabberd (version 2.1.x) the configuration is quite open. Let's see how we can secure this.
CakePHP is a wonderful MVC-based rapid development web framework heavily inspired by Ruby on Rails. I recently struggled with creating localized date time strings that originated from a database and depending on some database flags should produce different datetime strings.
I just stumbled over a yet incomplete wiki of mathematical structures that was really helpful so far. Have a look at Mathematical Structures.