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What are the main performance differences between varchar and nvarchar SQL Server data types?
...om of the crowd" theory that drives vote-based forums. There's too much misinformation out there. For example, this on DBA.SE. The other answer, accepted before I posted mine, is "correct" by the narrowest of definitions, misleading, and contains info that I disprove in mine, yet it still outpaces m...
What does the brk() system call do?
...ut brk/sbrk?
Why does calling sbrk(0) twice give a different value?
More info
Internally, the kernel decides if the process can have that much memory, and earmarks memory pages for that usage.
This explains how the stack compares to the heap: What is the function of the push / pop instructions u...
Why does changing 0.1f to 0 slow down performance by 10x?
...
@fig: 1<<11 is for the Underflow Mask. More info here: softpixel.com/~cwright/programming/simd/sse.php
– German Garcia
Feb 26 '14 at 16:29
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AngularJS ui-router login authentication
..., and upon request, it can resolve an object that represents the essential information about the user's identity. This can be whatever you need, but the essentials would be a display name, a username, possibly an email, and the roles a user belongs to (if this applies to your app). Principal also ha...
How can I extract embedded fonts from a PDF as valid font files?
... which more recently was renamed to mutool. These support the sub-commands info, clean, extract, poster and show. Unfortunatey, the official documentation for these tools isn't up to date (yet). If you're on a Mac using 'MacPorts': then the utility was renamed in order to avoid name clashes with oth...
How to build & install GLFW 3 and use it in a Linux project
...ay need to upgrade your gcc to version 4.7, or the upcoming version 4.8... Info on that here.
Then fix your errors if you typed the program by hand or tried to be "too clever" and something didn't work... Then link it using this monster! g++ main.o -o main.exec -lGL -lGLU -lglfw3 -lX11 -lXxf86vm -lX...
Why aren't python nested functions called closures?
...s.python.org/3/reference/… . I don't know why it's not easy to find more info about closures (and how you might expect them to behave, coming from JS) in the python3 documentation?
– user3773048
Dec 30 '18 at 21:30
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Differences between Ant and Maven [closed]
...ces Between Ant and Maven". Here's an answer that is a combination of the info in that introduction with some additional notes.
A Simple Comparison
I'm only showing you this to illustrate the idea that, at the most basic level, Maven has built-in conventions. Here's a simple Ant build file:
&...
What is the purpose of Rank2Types?
...
Luis Casillas's answer gives a lot of great info about what rank 2 types mean, but I'll just expand on one point he didn't cover. Requiring an argument to be polymorphic doesn't just allow it to be used with multiple types; it also restricts what that function can do w...
What are the underlying data structures used for Redis?
...nd are O(log(N)) data structures.
Conclusion
I hope that I provided some info in this post, but it is far better to download the source code of lamernews from http://github.com/antirez/lamernews and understand how it works. Many data structures from Redis are used inside Lamer News, and there are ...