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Database Structure for Tree Data Structure
...t:
https://blogs.msdn.microsoft.com/mvpawardprogram/2012/06/25/hierarchies-convert-adjacency-list-to-nested-sets
There are other models as well, including materialized path and nested sets:
http://communities.bmc.com/communities/docs/DOC-9902
Joe Celko has written a book on this subject, which is ...
public static const in TypeScript
...are two options
Make individual fields "final"
The following decorator converts both, annotated static and non-static fields to "getter-only-properties".
Note: If an instance-variable with no initial value is annotated @final, then the first assigned value (no matter when) will be the final one...
PopupWindow - Dismiss when clicked outside
...ndow on my activity, the thing is my PopupWindow still shows even when I'm interacting with my activity (say scrolling on my list). I can scroll through my list and the PopupWindow is still there.
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How do I programmatically “restart” an Android app?
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You can use PendingIntent to setup launching your start activity in the future and then close your application
Intent mStartActivity = new Intent(context, StartActivity.class);
int mPendingIntentId = 123456;
PendingIntent mPendingIntent = Pend...
What is a singleton in C#?
...
sure, i am NOT pointing you are wrong. i am giving a hint to the reader about thread-safety, so that they would be careful if they have to deal with it.
– Alagesan Palani
Apr 6 '15 at 17:18
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Why is it OK to return a 'vector' from a function?
...ause the array return will (if you write it in the simple form) return a pointer to the actual array on the stack, which is then promptly removed when the function returns.
But in this case, it works, because the std::vector is a class, and classes, like structs, can (and will) be copied to the ca...
Recreating a Dictionary from an IEnumerable
...the callers require the result of the method to be a dictionary. How can I convert the IEnumerable<KeyValuePair<string, ArrayList>> into a Dictionary<string, ArrayList> so that I can use TryGetValue ?
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Ways to synchronize interface and implementation comments in C# [closed]
Are there automatic ways to sync comments between an interface and its implementation?
I'm currently documenting them both and wouldn't like to manually keep them in sync.
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What's the point of malloc(0)?
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According to the specifications, malloc(0) will return either "a null pointer or a unique pointer that can be successfully passed to free()".
This basically lets you allocate nothing, but still pass the "artist" variable to a call to free() without worry. For practical purposes, it's pretty muc...
AngularJS : Difference between the $observe and $watch methods
...at post. scope.$eval(item) is really helpful. If item is a json string, it convert to an json object.
– bnguyen82
Aug 16 '13 at 9:16
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