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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...内存到CentralCache里。 解决了ptmalloc2中arena之间不能迁移的问题。
Tcmalloc占用更少的额外空间。例如，分配N个8字节对象可能要使用大约8N * 1.01字节的空间。即，多用百分之一的空间。Ptmalloc2使用最少8字节描述一个chunk。
更快。...
'too many values to unpack', iterating over a dict. key=>string, value=>list
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@jeffm that's what confused me. i saw this as a PHP foreach.
– tipu
Mar 29 '11 at 16:23
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Is there a MySQL option/feature to track history of changes to records?
...ess some comments in no particular order:
I did my own implementation in PHP that was a little more involved, and avoided some of the problems described in comments (having indexes transferred over, signifcantly. If you transfer over unique indexes to the history table, things will break. There ar...
Java EE web development, where do I start and what skills do I need? [closed]
..., css, etc) just like a web server does. It is comparable to Apache with a php module.
– Nemi
Dec 24 '09 at 16:16
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Infinity symbol with HTML
...ing Special Characters” section here might help: xvsxp.com/misc/keyboard.php
– Paul D. Waite
Feb 12 '10 at 21:07
I'm...
Which version of MVC am I using?
...an MVC3 as you see. Via web you can use MvcDiagnostics which is similar to phpinfo() functionality in PHP.
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Regex to test if string begins with http:// or https://
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As a PHP input string: $regex = '/^(https?:\/\/)';
– Steve Tauber
Jul 28 '14 at 14:09
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What does the Reflect object do in JavaScript?
...by the draft document found on the wiki,
http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts
We get the line about "single ordinary object" which it clarifies in the draft. It also has the function definitions.
The wiki should be reliable since you can find a link to it from the ...
How do I remove newlines from a text file?
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Using man 1 ed:
# cf. http://wiki.bash-hackers.org/doku.php?id=howto:edit-ed
ed -s file <<< $'1,$j\n,p' # print to stdout
ed -s file <<< $'1,$j\nwq' # in-place edit
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Crop MP3 to first 30 seconds
...exe win32 process. I assume something similar could be done in your Linux/PHP scenario.
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