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Function return value in PowerShell
...PowerShell has really wacky return semantics - at least when viewed from a more traditional programming perspective. There are two main ideas to wrap your head around:
All output is captured, and returned
The return keyword really just indicates a logical exit point
Thus, the following two scrip...
What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
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How is Node.js inherently faster when it still relies on Threads internally?
...h the meme that threads are just really hard. So if they're hard, you are more likely, when using threads to 1) break due to bugs and 2) not use them as efficiently as possible. (2) is the one you're asking about.
Think about one of the examples he gives, where a request comes in and you run some...
How to create a CPU spike with a bash command
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You can also do
dd if=/dev/zero of=/dev/null
To run more of those to put load on more cores, try to fork it:
fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & }; fulload; read; killall ...
C++ performance vs. Java/C#
...mizations that just aren't safe.
Also Java and C# can do heap allocations more efficiently than C++ because the layer of abstraction between the garbage collector and your code allows it to do all of its heap compression at once (a fairly expensive operation).
Now I can't speak for Java on this ne...
Is it bad practice to make a setter return “this”?
...at)
Several overloaded constructors (downside: gets unwieldy once you have more than a few)
Factory/static methods (downside: same as overloaded constructors - gets unwieldy once there is more than a few)
If you're only going to set a few properties at a time I'd say it's not worth returning 'this...
Why is “while ( !feof (file) )” always wrong?
...Many properties of state simply don't exist concurrently.
Let me make this more precise: Suppose you want to ask, "do you have more data". You could ask this of a concurrent container, or of your I/O system. But the answer is generally unactionable, and thus meaningless. So what if the container say...
Why can't I use Docker CMD multiple times to run multiple services?
...=true
[include]
files = /etc/supervisor/conf.d/*.conf
If you would like more details, I wrote a blog on this subject here: http://blog.trifork.com/2014/03/11/using-supervisor-with-docker-to-manage-processes-supporting-image-inheritance/
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Should switch statements always contain a default clause?
...okes kind of contradicts the rest of what you just said. :| I think a bit more explanation would make sense such as: you don't care about a default in this case because if another key is pressed you don't care, but if a variable is passed in is different than expected, we do care.
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Would it be beneficial to begin using instancetype instead of id?
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