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What are the applications of binary trees?
...ch applications where data is constantly entering/leaving, such as the map and set objects in many languages' libraries.
Binary Space Partition - Used in almost every 3D video game to determine what objects need to be rendered.
Binary Tries - Used in almost every high-bandwidth router for storing ro...
Having both a Created and Last Updated timestamp columns in MySQL 4.0
...possible to have the current timestamp be the default value for one column and the auto-update value for another column.
Changes in MySQL 5.6.5:
Previously, at most one TIMESTAMP column per table could be automatically initialized or updated to the current date and time. This restriction has b...
How do I get Fiddler to stop ignoring traffic to localhost?
... so that localhost has a "." after it.
For instance, you start debugging and the you have the following URL in the Address bar:
http://localhost:49573/Default.aspx
Change it to:
http://localhost.:49573/Default.aspx
Hit enter and Fidder will start picking up your traffic.
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How to check if the string is empty?
... answered Mar 5 '12 at 20:10
Andrew ClarkAndrew Clark
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Visual Studio Project vs. Solution
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A solution is a container for projects, and tracks dependencies between projects.
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Parallel.ForEach vs Task.Run and Task.WhenAll
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The first version will synchronously block the calling thread (and run some of the tasks on it).
If it's a UI thread, this will freeze the UI.
The second version will run the tasks asynchronously in the thread pool and release the calling thread until they're done.
There are also diffe...
Android: How can I get the current foreground activity (from a service)?
Is there a native android way to get a reference to the currently running Activity from a service?
12 Answers
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What is the fundamental difference between WebSockets and pure TCP?
I've read about WebSockets and I wonder why browser couldn't simply open trivial TCP connection and communicate with server like any other desktop application. And why this communication is possible via websockets?
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Securing my REST API with OAuth while still allowing authentication via third party OAuth providers
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First I'd like to emphasize the difference between authentication and authorization:
A user authenticates to your web site by supplying some credential such as a username+password. OpenID allows this to be displaced by having the user authenticate to another service, which then asserts th...
write a shell script to ssh to a remote machine and execute commands
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There are multiple remote linux machines, and I need to write a shell script which will execute the same set of commands in each machine. (Including some sudo operations). How can this be done using shell scripting?
You can do this with ssh, for example:
#!/bin/ba...