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How to retrieve the current version of a MySQL database management system (DBMS)?
...ile_machine | i686 |
| version_compile_os | pc-linux-gnu |
+-------------------------+------------------------------------------+
5 rows in set (0.04 sec)
MySQL 5.0 Reference Manual (pdf) - Determining Your Current MySQL Version ...
How to copy text programmatically in my Android app?
...Android app and I want to copy the text value of an EditText widget. It's possible for the user to press Menu+A then Menu+C to copy the value, but how would I do this programmatically?
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No module named MySQLdb
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You need to use one of the following commands. Which one depends on what OS and software you have and use.
easy_install mysql-python (mix os)
pip install mysql-python (mix os/ python 2)
pip install mysqlclient (mix os/ python 3)
apt-get install python-mysqldb (Linux Ubuntu, ...)
cd /usr/ports/da...
How to set or change the default Java (JDK) version on OS X?
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those really are backticks the export line
– David West
Nov 27 '14 at 19:38
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Detect application heap size in Android
... And
How much heap should my app use, given the constraints of the Android OS version and hardware of the user's device?
There is a different method for determining each of the above.
For item 1 above: maxMemory()
which can be invoked (e.g., in your main activity's onCreate() method) as follows:...
Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine
.... When deployed the application in a 64 bit server it shows the error "Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine ".
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Equivalent of strace -feopen < command > on mac os X
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I suppose you meant strace -fetrace=open?
dtruss -f -t open python myfile.py
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What is the correct way to start a mongod service on linux / OS X?
...odb
==> Downloading https://homebrew.bintray.com/bottles/mongodb-3.0.6.yosemite.bottle.tar.gz ### 100.0%
==> Pouring mongodb-3.0.6.yosemite.bottle.tar.gz
==> Caveats
To have launchd start mongodb at login:
ln -sfv /usr/local/opt/mongodb/*.plist ~/Library/LaunchAgents
Then to load mongodb ...
Thread context switch Vs. process context switch
...any one tell me what is exactly done in both situations? What is the main cost each of them?
10 Answers
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从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...也没有考虑重叠数对结果的影响，同样地，Mahout通过增加一个枚举类型（Weighting）的参数来使得重叠数也成为计算相似度的影响因子。
PearsonCorrelationSimilarity: 皮尔森相似度
原理：用来反映两个变量线性相关程度的统计量
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