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Separation of business logic and data access in django

...ation e-mail is sent to the user and an entry is added to the system log (etc. etc.) Such scenario's are useful to see how different parts of your infrastructure can be affected by a single command – in this case your database (some kind of 'active' flag), your mail server, your system log, etc...
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How to set Oracle's Java as the default Java in Ubuntu?

...nvironment variables globally and at system level means use should set in /etc/environment file. share | improve this answer | follow | ...
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Software Design vs. Software Architecture [closed]

...gn patterns, there are architectural patterns: MVC, 3-tier layered design, etc. Software design is about designing the individual modules / components. What are the responsibilities, functions, of module x? Of class Y? What can it do, and what not? What design patterns can be used? So in short, S...
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How can I programmatically create a new cron job?

... The best way if you're running as root, is to drop a file into /etc/cron.d if you use a package manager to package your software, you can simply lay down files in that directory and they are interpreted as if they were crontabs, but with an extra field for the username, e.g.: Filename: ...
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R data formats: RData, Rda, Rds etc

...Rda is just a short name for RData. You can just save(), load(), attach(), etc. just like you do with RData. Rds stores a single R object. Yet, beyond that simple explanation, there are several differences from a "standard" storage. Probably this R-manual Link to readRDS() function clarifies such d...
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“Connection for controluser as defined in your configuration failed” with phpMyAdmin in XAMPP

... "config.inc.php" accordingly. And BTW the config file is located in the "/etc/phpmyadmin" directory in Ubuntu – ajaybc Oct 24 '13 at 6:17 6 ...
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How to modify PATH for Homebrew?

... open your /etc/paths file, put /usr/local/bin on top of /usr/bin $ sudo vi /etc/paths /usr/local/bin /usr/local/sbin /usr/bin /bin /usr/sbin /sbin and Restart the terminal, @mmel ...
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How can I call controller/view helper methods from the console in Ruby on Rails?

... # get you the HTML > response.cookies # hash of the cookies # etc, etc share | improve this answer | follow | ...
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D Programming Language in the real world? [closed]

...de garbage collection, a monitor object for each class, runtime type info, etc. Unlike Ruby, Python, PHP, etc, D tries to be almost as fast as C, even if it is less dynamic and slightly more difficult to program in than scripting languages. The result is a language that is optimal when both develo...
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Default visibility for C# classes and members (fields, methods, etc.)?

... visibility of various aspects of C#. Class types, fields, methods, enums, etc. 4 Answers ...