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Best way to serialize an NSData into a hexadeximal string
...e Gallagher's answer is sufficient for a relatively small size, memory and cpu performance deteriorate for large amounts of data. I profiled this with a 2MB file on my iPhone 5. Time comparison was 0.05 vs 12 seconds. Memory footprint is negligible with this method while the other method grew the he...
Start ssh-agent on login
...nt processes is not a disadvantage, because they don't take more memory or CPU time.
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Why would you use Oracle database? [closed]
... Primary limitations af Express (XE) are 4 GB of data, 1 GB of RAM, 1 CPU.
– Gary Myers
Feb 11 '09 at 22:33
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[精华]VC++对话框程序打印及打印预览的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...类的实现。打印及打印预览是编写应用程序经常要解决的问题，为了理解VC++对话框程序的打印及打印预览实现,要先掌握基于文档/视图的应用程序打印及打印预览的基本原理。所以分为两部分介绍。
一、基于文档/视图的应用程...
List comprehension vs. lambda + filter
...enUlhaq this can be optimized to prime_cubes = [1] to save both memory and cpu cycles ;-)
– Dennis Krupenik
Mar 12 '18 at 10:21
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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 ...
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
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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...
What is state-of-the-art for text rendering in OpenGL as of version 4.1? [closed]
... glPathGlyphsNV which depends on the freetype2 library to get the metrics, etc. Then you can also access the kerning info with glGetPathSpacingNV and use NVpr's general path rendering mechanism to display text from using the path-"converted" fonts. (I put that in quotes, because there's no real conv...