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PHP操作MongoDB时的整数问题及对策 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...作系统中把整数都当做64位来处理，有兴趣的可参考：64-bit integers in MongoDB。
那么PHP驱动真的完全解决了整数问题么？NO！在处理group操作的时候还有BUG：
为了说明问题，我们先来生成一些测试数据：
<?php
ini_set('mongo.native_l...
The forked VM terminated without saying properly goodbye. VM crash or System.exit called
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OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
– Julien
Nov 15 '18 at 9:25
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How to make the python interpreter correctly handle non-ASCII characters in string operations?
...TF-8 encoding (because all bytes in multi-byte characters have the highest bit set to 1).
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When to use LinkedList over ArrayList in Java?
...lists take up for N null references.
Since references are either 32 or 64 bits (even when null) on their relative systems, I have included 4 sets of data for 32 and 64 bit LinkedLists and ArrayLists.
Note: The sizes shown for the ArrayList lines are for trimmed lists - In practice, the capacity of...
Can you change what a symlink points to after it is created?
... the link is being removed or renamed in a directory that has the sticky
bit set (see stat(2)).
The last access and last modification timestamps of a symbolic link can be
changed using utimensat(2) or lutimes(3).
On Linux, the permissions of a symbolic link are not used in any oper...
Http长连接200万尝试及调优 - 更多技术 - 清泛网 - 专注C/C++及内核技术
....02-0612,
Network: eth0 (bnx2):Broadcom NetXtreme II BCM5709 Gigabit Ethernet,1000Mb/s
OS: RHEL Server 5.4 (Tikanga), Linux 2.6.18-164.el5 x86_64, 64-bit
服务端程序很简单，基于nginx写的一个comet模块，该模块接受用户的请求，然后保持用户...
Get generated id after insert
...ry in most SQLite tables (except for WITHOUT ROWID tables) has a unique 64-bit signed integer key called the "rowid". The rowid is always available as an undeclared column named ROWID, OID, or _ROWID_ as long as those names are not also used by explicitly declared columns. If the table has a column ...
Where to find the win32api module for Python? [closed]
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'pywin32' is its canonical name.
http://sourceforge.net/projects/pywin32/
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将Linux代码移植到Windows的简单方法 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
将Linux代码移植到Windows的简单方法一．前言 Linux拥有丰富各种源代码资源,但是大部分代码在Windows平台情况是无法正常编译的。Windows平台根本无法直接利用这些源代码资源...一．前言
Linux拥有丰富各种源代码资源,但是大部...
Good ways to manage a changelog using git?
...ing like "Merged branch feature-foobar", you can shorten things by only showing that message, and not all the little commits that you merged, which together form the feature:
git log --pretty=%s --first-parent # only follow first parent of merges
You might be able to augment this with a script o...