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How to delete duplicate lines in a file without sorting it in Unix?
...sed when the input file ends with a blank line and no chars. On my Mac my CPU just spins.
Infinite loop if last line is blank and has no chars:
sed '$!N; /^\(.*\)\n\1$/!P; D'
Doesn't hang, but you lose the last line
sed '$d;N; /^\(.*\)\n\1$/!P; D'
The explanation is at the very end of the sed ...
Comparison between Corona, Phonegap, Titanium
... JS engine: SquirrelFish Extreme
Web page rendering moving from relying on CPU to using GPU acceleration. Graphic intensive tasks such as page transition and 3D animation become a lot smoother with the help of hardware acceleration. GPU Accelerated Compositing in Chrome
Such improvements that are ...
Why are nested weights bad for performance? Alternatives?
...e exponent involved is small. For small depths of nesting, to not use the CPU required to do this is like having a workhorse that you pamper all week and only lead out for walks on Sundays. Still, for large depths of nesting, it's a point well taken.
– Carl
J...
setTimeout or setInterval?
...to execute than the interval that is set for it, the browser will eat 100% CPU trying to service it, and may become less responsive.
Which do you use and why?
Chained-Timeout gives a guaranteed slot of free time to the browser; Interval tries to ensure the function it is running executes as cl...
Why “decimal” is not a valid attribute parameter type?
...mides i believe the answer is the type is too large to express in a single CPU register as it is 128bit
– Chris Marisic
May 2 '16 at 19:05
3
...
How to resize an Image C#
...he NORMAL behaviour of the garbage collector that it frees memory when the CPU is idle. The using() statement does not prevent memory leaks. It just frees the memory immediately while the garbage collector frees the memory when it has time to do that. That is the only difference in this specific cas...
How does Google's Page Speed lossless image compression work?
...
It's a matter of trading encoder's CPU time for compression efficiency. Compression is a search for shorter representations, and if you search harder, you'll find shorter ones.
There is also a matter of using image format capabilities to the fullest, e.g. PNG...
Java compile speed vs Scala compile speed
...scala type system is way more complicated than Java's and hence takes more CPU time.
Type inference - type inference is computationally expensive and a job that javac does not need to do at all
scalac includes an 8-bit simulator of a fully armed and operational battle station, viewable using the mag...
How can I be notified when an element is added to the page?
... here. Seriously. Don't poll the DOM every 100 milliseconds; it will waste CPU power and your users will hate you.
Since mutation events were deprecated in 2012, and you have no control over the inserted elements because they are added by someone else's code, your only option is to continuously che...
What's the difference between deque and list STL containers?
...ations. Plan to use in a O(1) arbitrarily large software managed cache for CPU pointers on GPU memory. Nods to the Linux O(1) scheduler (LRU <-> run queue per processor). The unordered_map has constant time access via hash table.
#include <iostream>
#include <list>
#include <...