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Database Structure for Tree Data Structure
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Joe Celko has written a book on this subject, which is a good reference from a general SQL perspective (it is mentioned in the nested set article link above).
Also, Itzik Ben-Gann has a good overview of the most common options in his book "Inside Microsoft SQL Server 2005: T-SQL Querying".
The ...
Why do std::shared_ptr work
...er<double>(p)
When a shared_ptr is copied (or default constructed) from another the deleter is passed around, so that when you construct a shared_ptr<T> from a shared_ptr<U> the information on what destructor to call is also passed around in the deleter.
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What are Runtime.getRuntime().totalMemory() and freeMemory()?
...he maximum memory. If you run with -Xms1024m -Xmx1024m, the value you get from totalMemory() and maxMemory() will be equal.
Also, if you want to accurately calculate the amount of used memory, you do so with the following calculation :
final long usedMem = totalMemory() - freeMemory();
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How to close a Java Swing application from the code
What is the proper way to terminate a Swing application from the code, and what are the pitfalls?
9 Answers
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returning in the middle of a using block
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@James Curran. From top to here, Only you explained what happed in the background. Many thanks.
– Sercan Timoçin
Sep 10 '19 at 15:18
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javascript: Clear all timeouts?
Is there a way to clear all time outs from a given window? I suppose the timeouts are stored somewhere in the window object but couldn't confirm that.
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What is the difference between encrypting and signing in asymmetric encryption?
...e key.
You'll probably need to purchase a certificate for your public key from a commercial provider like Verisign or Thawte, so that people may check that no one had forged your software and replaced your public key with theirs.
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Ignore Xcode warnings when using Cocoapods
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Add to your Podfile:
platform :ios
# ignore all warnings from all pods
inhibit_all_warnings!
# ignore warnings from a specific pod
pod 'FBSDKCoreKit', :inhibit_warnings => true
Then execute: pod install
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Git authentication fails after enabling 2FA
...username and password but that didn't work. In particular, when switching from https to ssh, the ssh key gives
8 Answers
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How to articulate the difference between asynchronous and parallel programming?
...ender the animation takes a long time so if you were to launch that render from within your animation editing software you would make sure it was running asynchronously so it didn't lock up your UI and you could continue doing other things. Now, each frame of that animation can also be considered as...