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How can I tell if I'm running in 64-bit JVM or 32-bit JVM (from within a program)?
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This argument was removed in Java 9, see JDK-8168010. Additionally it might not satisfy "from within a program" reliably, given that Solaris supported both pre JDK8 and therefore you could likely currently be running with a 32 bit data model, but java -d64 -version retur...
What is a vertical tab?
..., fill in header, VT to body area, fill in lines, VT to form footer. Generally it was coded in the program as a character constant. From the keyboard, it would be CTRL-K.
I don't believe anyone would have a reason to use it any more. Most forms are generated in a printer control language like po...
Why does an image captured using camera intent gets rotated on some devices on Android?
...y?
– Navya Ramesan
May 23 '19 at 14:16
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show 12 more comments
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Find objects between two dates MongoDB
...being before "Jan Sun 01.01.1000"). It would probably make sense to format all date data into the MongoDB format, which I think is just plain JavaScript Date.
– ponzao
May 31 '10 at 16:47
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How to make an HTTP POST web request
...myPassword";
– Bimal Poudel
Jul 17 '16 at 0:19
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show 2 mo...
When is TCP option SO_LINGER (0) required?
...void large numbers of connections sitting in the TIME_WAIT state, tying up all the available resources on a server.
When a TCP connection is closed cleanly, the end that initiated the close ("active close") ends up with the connection sitting in TIME_WAIT for several minutes. So if your protocol i...
Finding the type of an object in C++
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167
dynamic_cast should do the trick
TYPE& dynamic_cast<TYPE&> (object);
TYPE* dynam...
How to set default value for form field in Symfony2?
..., it will also always force the value under any context. Not what I would call a "default value"...
– Hubert Perron
Apr 3 '13 at 18:25
4
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Python naming conventions for modules
I have a module whose purpose is to define a class called "nib". (and a few related classes too.) How should I call the module itself? "nib"? "nibmodule"? Anything else?
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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ngodb.org/downloads
实验环境使用的Mongodb版本为mongodb-linux-x86_64-2.6.0
由三台虚拟机搭建，配置为单核,1G内存。实验环境如下:
MongoDB的副本集不同于以往的主从模式。
在集群Master故障的时候，副本集可以自动投票，选举出新的Maste...