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Fastest way to extract frames using ffmpeg?
... 1/1 $filename%03d.bmp
This also has the advantage of not incurring more quality loss through quantization by transcoding to JPEG. (PNG is also lossless but tends to take much longer than JPEG to encode.)
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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...an会告诉我们对象锁在的页面号范围。 假设这个范围是[p,q]， 先查找页面p-1和q+1所在的span，如果这些临近的span也是free的，则合并到[p,q]所在的span， 然后把这个span回收到PageHeap中。
CentralCache的central free lists类似ThreadCache的FreeLis...
How to copy yanked text to VI command prompt
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<C-R>" Will paste default buffer. Alternately, you can use q: to open a buffer for the next command. try :help q:
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Using Emacs to recursively find and replace in text files not already open
As a follow-up to this question , it's trying to find out how to do something like this which should be easy, that especially stops me from getting more used to using Emacs and instead starting up the editor I'm already familiar with. I use the example here fairly often in editing multiple files.
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ng-model for `` (with directive DEMO)
...$scope.uploadme="*" makes the image disappear.
– Per Quested Aronsson
Sep 19 '13 at 18:15
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The p...
Remove whitespaces inside a string in javascript
I've read this question about javascript trim, with a regex answer.
4 Answers
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How can I troubleshoot my Perl CGI script?
...lete guide to every
problem that you may encounter, nor a tutorial on bug squashing. It
is just the culmination of my experience debugging CGI scripts for twenty (plus!) years. This page seems to have had many different homes, and I seem
to forget it exists, so I'm adding it to the StackOverflow. ...
How do you do a limit query in JPQL or HQL?
In Hibernate 3, is there a way to do the equivalent of the following MySQL limit in HQL?
14 Answers
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What are inline namespaces for?
...oducing a new namespace for std::vector with emplace_back support (which requires C++11) and inlining that one iff __cplusplus == 201103L.
OK, so why do I need a new language feature for this? I can already do the following to have the same effect, no?
namespace std {
namespace pre_cxx_1997 {...
How to check if there's nothing to be committed in the current branch?
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--quiet (which implies --exit-code) also silences output, for those who only want the exit code.
– phs
Mar 5 '16 at 0:41
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