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How can I view live MySQL queries?
... answered Jul 31 '14 at 11:46
python1981python1981
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Creating a new column based on if-elif-else condition
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I'm an old SAS user learning Python, and there's definitely a learning curve! :-) For example, the above code could be written in SAS as: data df; set df; if A=B then C=0; else if A>B then C=1; else C=-1; run; Very elegant and simple.
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Git 工具 - 子模块(submodule)：一个仓库包含另一个仓库 - 开源 & Github -...
...地配置文件，而 git submodule update 则从该项目中抓取所有数据并检出父项目中列出的合适的提交。
$ git submodule init
Submodule 'DbConnector' (https://github.com/chaconinc/DbConnector) registered for path 'DbConnector'
$ git submodule update
Cloning into 'D...
Unicode与UTF-8互转(C语言实现) - C/C++ - 清泛网 - 专注C/C++及内核技术
...区, 以UTF-8编码
* Unic 指向输出缓冲区, 其保存的数据即是Unicode编码值,
* 类型为unsigned long .
*
* 返回值:
* 成功则返回该字符的UTF8编码所占用的字节数; 失败则返回0.
*
* 注意:
* 1. UTF8没有字...
Is it possible to define more than one function per file in MATLAB, and access them from outside tha
...space using the assignin function. (Doing it like this reminds me a lot of Python's "import x from y" way of doing things)
function message = makefuns
assignin('base','fun1',@fun1);
assignin('base','fun2',@fun2);
message='Done importing functions to workspace';
end
function y=fun1(x)
y=x;
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ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired
... While inserting data to a table using a connection object in python i got some error. Then the python script is closed without properly closing the connection object. Now i am getting the "LOCKWAIT" error when i try to drop the table in another session. When i try kill session i dont h...
How to write DataFrame to postgres table?
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For Python 2.7 and Pandas 0.24.2 and using Psycopg2
Psycopg2 Connection Module
def dbConnect (db_parm, username_parm, host_parm, pw_parm):
# Parse in connection information
credentials = {'host': host_parm, 'database': ...
Performance of Java matrix math libraries? [closed]
...The results are as follows.
Using multithreaded ATLAS with C/C++, Octave, Python and R, the time taken was around 4 seconds.
Using Jama with Java, the time taken was 50 seconds.
Using Colt and Parallel Colt with Java, the time taken was 150 seconds!
Using JBLAS with Java, the time taken was agai...
How to set a single, main title above all the subplots with Pyplot?
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In python 2.7 it is fontsize instead of size. plt.suptitle("Main Title", fontsize=16)
– Temak
Feb 11 '16 at 17:59
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django models selecting single field
...his command is returning me all the fields for my Django version 2.1.3 and python version 3.6.2.
– Ananthi
Feb 4 '19 at 7:15
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