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How to set up a PostgreSQL database in Django

... You need to install psycopg2 Python library. Installation Download http://initd.org/psycopg/, then install it under Python PATH After downloading, easily extract the tarball and: $ python setup.py install Or if you wish, install it b...
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How to efficiently build a tree from a flat structure?

... objects in a hash table mapping to the specific object. Enumerate through all the objects and find their parent if it exists and update its parent pointer accordingly. class MyObject { // The actual object public int ParentID { get; set; } public int ID { get; set; } } class Node { pu...
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Exit Shell Script Based on Process Exit Code

...ror code if the file doesn't exist (since the sed part of the pipeline actually works, returning 0). The bash shell actually provides an array which can assist in that case, that being PIPESTATUS. This array has one element for each of the pipeline components, that you can access individually like ...
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How to add google chrome omnibox-search support for your site?

... Chrome usually handles this through user preferences. (via chrome://settings/searchEngines) However, if you'd like to implement this specifically for your users, you need to add a OSD (Open Search Description) to your site. Making us...
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How do I make python wait for a pressed key?

... @JonTirsen that's because Python 2.7 has a function called input which evaluates the string you input. To fix, use raw_input – Samy Bencherif Dec 3 '15 at 3:16 ...
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Twitter bootstrap modal-backdrop doesn't disappear

... Hiding the modal before the AJAX call is a poor solution if you need to evaluate the AJAX response and update the modal accordingly. – asciimo Oct 17 '13 at 1:32 ...
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Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12

... the crash you may need to setup a swap space for your micro instance. Actually performance wise is better to enable swap. Steps below show how to make a swap space for your Micro instance. I assume you have AWS Account with a Micro instance running. Run dd if=/dev/zero of=/swapfile bs=1M count=102...
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console.log timestamps in Chrome?

...(); if (arguments.length) { // True array copy so we can call .splice() var args = Array.prototype.slice.call(arguments, 0); // If there is a format string then... it must // be a string if (typeof arguments[0] === "string") { // ...
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Bootstrap table without stripe / borders

... I didn't put the 'borderless' for the td element. Tested and it worked! All the borders and paddings are completely stripped off. share | improve this answer | follow ...
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What modern C++ libraries should be in my toolbox? [closed]

...abase SOCI OTL LMDB++ Design IoC Frameworks Hypodermic PocoCapsule Wallaroo Documents LibreOffice API PoDoFo Graphics Allegro OGRE SFML GUI FLTK GTK Qt Qwt wxWidgets VTK Hashing MurmurHash3 Imaging Boost.GIL CImg DevIL EasyBMP FreeImage ITK OpenCV Logging Boost.Log log4cxx ...