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Perform an action in every sub-directory using Bash
...
for D in `find . -type d`
do
//Do whatever you need with D
done
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Default implementation for Object.GetHashCode()
...o a dictionary, reference equality is perfect. With strings, as you note, one is usually more interested in whether a string containing the same sequence of characters has already been added. That's why string overrides GetHashCode. On the other hand, suppose you want to keep a count of how many ...
Multiprocessing: How to use Pool.map on a function defined in a class?
... This has worked very well for me, thank you. I have found one weakness: I tried using parmap on some functions that passed around a defaultdict and got the PicklingError again. I did not figure out a solution to this, I just reworked my code to not use the defaultdict.
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Get element inside element by class and ID - JavaScript
...yId("foo").getElementsByClassName("bar")[0];
getElementById only returns one node, but getElementsByClassName returns a node list. Since there is only one element with that class name (as far as I can tell), you can just get the first one (that's what the [0] is for—it's just like an array).
T...
Why can't I declare static methods in an interface?
...Yes - it's idealogical not technical. The reason I would like it is. that one can have a static "implementation" method in an interface that only references other "interface" methods in the interface that can be easily re-used by implementing classes. But one can declare a static class in an interf...
Detecting design mode from a Control's constructor
Following-on from this question , is it possible to detect whether one is in design or runtime mode from within an object's constructor?
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How to do a join in linq to sql with method syntax?
...to create a new object of a third different type with a where clause (e.g. one that is not your Entity Framework object) you can do this:
public IEnumerable<ThirdNonEntityClass> demoMethod(IEnumerable<int> property1Values)
{
using(var entityFrameworkObjectContext = new EntityFramewo...
Remove scroll bar track from ScrollView in Android
... a scrollbar from a view (and its subclass) via xml:
android:scrollbars="none"
http://developer.android.com/reference/android/view/View.html#attr_android:scrollbars
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How do I save a stream to a file in C#?
...is seems to be something people want to see... if you do just want to copy one stream to another (e.g. to a file) use something like this:
/// <summary>
/// Copies the contents of input to output. Doesn't close either stream.
/// </summary>
public static void CopyStream(Stream input, St...
Detect changes in the DOM
...Chrome 18+, Firefox 14+, IE 11+, Safari 6+
If you need to support older ones, you may try to fall back to other approaches like the ones mentioned in this 5 (!) year old answer below. There be dragons. Enjoy :)
Someone else is changing the document? Because if you have full control over the c...