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What are the benefits to marking a field as `readonly` in C#?
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Possible to do a MySQL foreign key to one of two possible tables?
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Bill KarwinBill Karwin
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Tricks to manage the available memory in an R session
... [based on postings by Petr Pikal and David Hinds to the r-help list in 2004] to list (and/or sort) the largest objects and to occassionally rm() some of them. But by far the most effective solution was ... to run under 64-bit Linux with ample memory.
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Pandas - Get first row value of a given column
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C 12.0
D 25.0
E 12.0
Name: 0, dtype: float64
To select the ith value in the Btime column you could use:
In [30]: df_test['Btime'].iloc[0]
Out[30]: 1.2
There is a difference between df_test['Btime'].iloc[0] (recommended) and df_test.iloc[0]['Btime']:
DataFrames...
'Java' is not recognized as an internal or external command
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T-SQL Cast versus Convert
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CONVERT is SQL Server specific, CAST is ANSI.
CONVERT is more flexible in that you can format ...
Null coalescing in powershell
...l "new value"
New-Alias "?:" IfTrue
$ans = ?: ($q -eq "meaning of life") 42 $otherval
Clearly this isn't going to be to everyone's taste, but may be what you're looking for.
As Thomas notes, one other subtle difference between the C# version and the above is that C# performs short-circuiting of...
unbound method f() must be called with fibo_ instance as first argument (got classobj instance inste
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answered Nov 6 '14 at 21:04
Eric LeschinskiEric Leschinski
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Read whole ASCII file into C++ std::string [duplicate]
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Update: Turns out that this method, while following STL idioms well, is actually surprisingly i...
Adding new column to existing DataFrame in Python pandas
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