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Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?

...cts of the collection type that have been instantiated with attributes and linked to this object through a foreign key, but have not yet been saved. Note: This only works if an associated object already exists, not if it‘s nil! The answer to building in the opposite direction is a ...
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Why is Python 3.x's super() magic?

...as kicked off by Guido, who initially envisioned super becoming a keyword, and the idea of using a cell to look up the current class was also his. Certainly, the idea to make it a keyword was part of the first draft of the PEP. However, it was in fact Guido himself who then stepped away from the ke...
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Can I run javascript before the whole page is loaded?

...er encounters a classic script tag when parsing the HTML, it stops parsing and hands over to the JavaScript interpreter, which runs the script. The parser doesn't continue until the script execution is complete (because the script might do document.write calls to output markup that the parser should...
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Why is the standard session lifetime 24 minutes (1440 seconds)?

I've been doing some research on PHP Session Handling and came across the session.gc_maxlifetime value of 1440 seconds. I've been wondering why the standard value is 1440 and how it is calculated? What is the basis for this calculation? ...
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How do you stop Console from popping up automatically in Eclipse

...e popup every few seconds. How do I stop it from automatically popping up and taking focus? 3 Answers ...
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How do I get logs/details of ansible-playbook module executions?

... If you pass the -v flag to ansible-playbook on the command line, you'll see the stdout and stderr for each task executed: $ ansible-playbook -v playbook.yaml Ansible also has built-in support for logging. Add the following lines to your ansible configuration file: [defaults] ...
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How to copy from current position to the end of line in vi

...n windows. How to copy text from current position to the end of line in vi and paste it in another file opened in vi. I googled it but cant find any solution for this. Appreciate any help on this. Thank you. ...
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onTouchListener warning: onTouch should call View#performClick when a click is detected

...hod, so you should actually return "true" instead? – android developer Aug 17 '14 at 12:27 @longilong Well if you wish...
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Is there a simple way to remove unused dependencies from a maven pom.xml?

I have a large Maven project with many modules and many pom.xml files. The project has changed and I suspect the pom's contain some unnecessary dependencies. Is there is a command which removes any unused dependencies from a pom? ...
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Read input from console in Ruby?

...ing like that? Update Kernel.gets tries to read the params found in ARGV and only asks to console if not ARGV found. To force to read from console even if ARGV is not empty use STDIN.gets share | ...