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Pimpl idiom vs Pure virtual class interface
...ual differ significantly if you're in a library and want to swap your .so/.dll without rebuilding the client. Clients link to pimpl frontends by name so keeping old method signatures is enough. OTOH in pure abstract case they effectively link by vtable index so reordering methods or inserting in the...
How do I ignore files in Subversion?
...e following ignore list for a Visual Studio .NET project:
bin obj
*.exe
*.dll
_ReSharper
*.pdb
*.suo
You can find this list in the context menu at TortoiseSVN / Properties.
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detach all packages while working in R
...; sessionInfo()
R version 2.13.1 Patched (2011-09-13 r57007)
Platform: x86_64-unknown-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_GB.utf8 LC_NUMERIC=C
[3] LC_TIME=en_GB.utf8 LC_COLLATE=en_GB.utf8
[5] LC_MONETARY=C LC_MESSAGES=en_GB.utf8
[7] LC_PAPER=e...
What are allowed characters in cookies?
...hmed Ashour
4,1191010 gold badges2828 silver badges4646 bronze badges
answered Dec 28 '09 at 12:54
bobincebobince
484k9999 gold ba...
Why is division in Ruby returning an integer instead of decimal value?
...o learn what works best. Here's the benchmark I put together: require 'base64';require 'zlib';puts Zlib.inflate(Base64.decode64("eJxlkMEOwiAQRO98hekFuGzxQEwPXvwR01ZqiYHqBk2Tln8XDlWgnDbM25nJonq9NaoD7ZTtR9PigxK09zM7AkgRHieXTYHOsBNf1nklM6B6TuhYpdp+rPgSdiCOi/d/kQ71QBOtAVFLEDly05+UYQ2H+MckL6z0zioDdJG1S9K...
Sometimes adding a WCF Service Reference generates an empty reference.cs
...rvices/MyService.svc /d:test /r:"C:\MyCode\MyAssembly\bin\debug\MyAssembly.dll"
Where:
/t:code generates the code from given url
/d: to specify the directory for the output
/r: to specify a reference assembly
Full svcutil command line reference here: http://msdn.microsoft.com/en-us/library/aa3...
Remap values in pandas column with a dict
... @PrestonH It works perfectly for me. Running: '3.6.1 |Anaconda custom (64-bit)| (default, May 11 2017, 13:25:24) [MSC v.1900 64 bit (AMD64)]'
– Dan
Dec 6 '17 at 9:47
...
Convert DataFrame column type from string to datetime, dd/mm/yyyy format
...pd.Series(['05/23/2005']))
Out[11]:
0 2005-05-23 00:00:00
dtype: datetime64[ns]
You can pass a specific format:
In [12]: pd.to_datetime(pd.Series(['05/23/2005']), format="%m/%d/%Y")
Out[12]:
0 2005-05-23
dtype: datetime64[ns]
...
App Inventor 2开发简单计算器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...判断后数的长度：如果后数长度≥1，则从原字符串的首位开始截取长度为（后数长度-1）的子串。代码如图2-16所示。图2-16 删除后数的末尾数字经测试，正序运行正确。三、清除后数当用户点击CE按键时，会将已经输入的后数清...
How do I find numeric columns in Pandas?
... exclude. So isNumeric would look like:
numerics = ['int16', 'int32', 'int64', 'float16', 'float32', 'float64']
newdf = df.select_dtypes(include=numerics)
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