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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...malloc一块内存，作为整个连接生命周期内的内存池。 当HTTP请求到达的时候，又会malloc一块当前请求阶段的内存池, 因此对malloc的分配速度有一定的依赖关系。(而apache的内存池是有父子关系的，请求阶段的内存池会和连接阶段的...
Why is Class.newInstance() “evil”?
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The Java API documentation explains why (http://java.sun.com/javase/6/docs/api/java/lang/Class.html#newInstance()):
Note that this method propagates any exception thrown by the nullary constructor, including a checked exception. Use of this method effectively by...
How to output loop.counter in python jinja template?
...t;>> Template(s).render(elements=["a", "b", "c", "d"])
1 2 3 4
See http://jinja.pocoo.org/docs/templates/ for more.
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Running Python on Windows for Node.js dependencies
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Here is a guide that resolved a lot of these issues for me.
http://www.steveworkman.com/node-js/2012/installing-jsdom-on-windows/
I remember in particular the python version as important. Make sure you install 2.7.3 instead of 3's.
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Post data to JsonP
...ous POST" means submitting a form that uses <form method="post" action="http://.../...">
– Steven Kryskalla
Jun 3 '11 at 22:00
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Coding Conventions - Naming Enums
...instances should be uppercase according to the docs on the Oracle website (http://docs.oracle.com/javase/tutorial/java/javaOO/enum.html).
However, while looking through a JavaEE7 tutorial on the Oracle website (http://www.oracle.com/technetwork/java/javaee/downloads/index.html), I stumbled across t...
LEN function not including trailing spaces in SQL Server
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This is clearly documented by Microsoft in MSDN at http://msdn.microsoft.com/en-us/library/ms190329(SQL.90).aspx, which states LEN "returns the number of characters of the specified string expression, excluding trailing blanks". It is, however, an easy detail on to miss if yo...
How can I break an outer loop with PHP?
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In the case of 2 nested loops:
break 2;
http://php.net/manual/en/control-structures.break.php
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Is there a way to stop Google Analytics counting development work as hits?
... all depending on who you ask.
So, I created my own Browser Extension...
https://chrome.google.com/webstore/detail/lknhpplgahpbindnnocglcjonpahfikn
It follows me wherever I go
It works on a dev environment and on live/public domains
It only affects me and the sites that I'm developing
It turns o...
How do I sort unicode strings alphabetically in Python?
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The differences between those two algorithms are briefly summarized here: http://unicode.org/faq/collation.html#13. These are rather exotic special cases, which should rarely matter in practice.
>>> import icu # pip install PyICU
>>> sorted(['a','b','c','ä'])
['a', 'b', 'c', 'ä...