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What is the significance of initializing direction arrays below with given values when developing ch

... This is a technique to encode all directions as arrays - every pair of di[i],dj[i] is a different direction. If we imagine we have a piece at a location x,y, and we want to add onto its x and its y value to move it to a nearby location, 1,0 is east, -1,0...
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Django : How can I see a list of urlpatterns?

... If you want a list of all the urls in your project, first you need to install django-extensions, add it to your settings like this: INSTALLED_APPS = ( ... 'django_extensions', ... ) And then, run this command in your terminal ./manage.py show_...
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Installing Google Protocol Buffers on mac

I would like to install the older version of Google Protocol Buffers (protobuf-2.4.1) on mac using Terminal command line. I tried with brew install protobuf , but the latest version 2.5.0 has been installed. Is it possible to install the older version from terminal. ...
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How to elegantly ignore some return values of a MATLAB function?

... return value from a function without having to create dummy variables for all n-1 return values before it? 8 Answers ...
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ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)

... The ContentList's Set method will not get called when you change a value inside the collection, instead you should be looking out for the CollectionChanged event firing. public class CollectionViewModel : ViewModelBase { public ObservableCollection<E...
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How to create a drop shadow only on one side of an element?

...; } <div id="box" class="box-shadow"></div> UPDATE 3 All my previous answers have been using extra markup to get create this effect, which is not necessarily needed. I think this a much cleaner solution... the only trick is playing around with the values to get the right positi...
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What does the “~” (tilde/squiggle/twiddle) CSS selector mean?

...ter .a in HTML source order. Likewise, .check:checked ~ .content matches all .content elements that are siblings of .check:checked and appear after it. share | improve this answer | ...
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How to call shell commands from Ruby

How do I call shell commands from inside of a Ruby program? How do I then get output from these commands back into Ruby? 20...
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Replacements for switch statement in Python?

...erformance is an issue, so it doesn't re-build the dict on every function call – Claudiu Oct 23 '08 at 16:22 56 ...
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Downcasting in Java

Upcasting is allowed in Java, however downcasting gives a compile error. 11 Answers 1...