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刘强东“一元年薪”背后的O2O棋局 - 资讯 - 清泛网 - 专注C/C++及内核技术
...业务开展主要是实体产品电商，使用的是公司既有的物流系统。公司通过“京东到家”手机应用销售生鲜产品，将居民区附近的超市与用户相连。虽然目前用户数量不是太多，但公司目前已经看到了一些成果。
除此之外，与永...
What is 'YTowOnt9'?
... -d to mean decode, so in your case, probably yes. The answer's author is most likely on OS X, which uses -D for decode. Portability is hard. :-)
– Thanatos
Apr 23 '14 at 16:38
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Apply .gitignore on an existing repository already tracking large number of files
I have an existing Visual Studio project in my repository. I recently added a .gitignore file under my project and I assume that tells Git to ignore the files listed in the file.
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NullPointerException in Java with no StackTrace
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You are probably using the HotSpot JVM (originally by Sun Microsystems, later bought by Oracle, part of the OpenJDK), which performs a lot of optimization. To get the stack traces back, you need to pass the option -XX:-OmitStackTraceInFastThrow to the JVM.
The optimization is that when...
Should URL be case sensitive?
...you are submitting. It is up to the server how to handle the request URL. Most of web servers are unix/linux and that means most of web servers are case sensitive.
– oᴉɹǝɥɔ
Apr 30 '13 at 16:37
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CSS table-cell equal width
...t. See edit about Safari 6 below */
}
EDIT (2013): Beware of Safari 6 on OS X, it has table-layout: fixed; wrong (or maybe just different, very different from other browsers. I didn't proof-read CSS2.1 REC table layout ;) ). Be prepared to different results.
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Reducing MongoDB database file size
...dTiger it looks like the extra disk space will actually be released to the OS.
UPDATE: as of v1.9+ there is a compact command.
This command will perform a compaction "in-line". It will still need some extra space, but not as much.
MongoDB compresses the files by:
copying the files to a new ...
SQL - Query to get server's IP address
... the address you would give to someone if they can't use the server's NetBios name or FQDN for some reason.
I advice strongly against using this answer. Enabling the shell out is a very bad idea on a production SQL Server.
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Garbage collector in Android
... then improves things, performance-wise. This is because it is not really possible to implement a "perfect" GC which will manage memory optimally in all cases. Such situations are hard to predict and depend on many subtle implementation details. The "good practice" is to let the GC run by itself; a ...
How can I measure the actual memory usage of an application or process?
...ou insights about the amount of memory used, and, more importantly, about possible memory leaks in your program. The heap profiler tool of Valgrind is called 'massif':
Massif is a heap profiler. It performs detailed heap profiling by taking regular snapshots of a program's heap. It produces a grap...