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git - merge conflict when local is deleted but file exists in remote
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CascabelCascabel
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SQL DELETE with INNER JOIN
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answered Dec 22 '11 at 2:34
ThinkingStiffThinkingStiff
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Why is rbindlist “better” than rbind?
... data.frame(b = 1:2, a = 2:3)))
## a b
## 1 1 2
## 2 2 3
## 3 2 1
## 4 3 2
rbindlist(list(data.frame(a = 1:5, b = 2:6), data.frame(b = 1:5, a = 2:6)))
## a b
## 1: 1 2
## 2: 2 3
## 3: 1 2
## 4: 2 3
Some other limitations of rbindlist
It used to struggle to deal with factors, due...
What difference is there between WebClient and HTTPWebRequest classes in .NET?
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243
WebClient is a higher-level abstraction built on top of HttpWebRequest to simplify the most com...
Column order manipulation using col-lg-push and col-lg-pull in Twitter Bootstrap 3
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284
This answer is in three parts, see below for the official release (v3 and v4)
I couldn't even f...
Bash, no-arguments warning, and case decisions
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4 Answers
4
Active
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How to open every file in a folder?
... Roelant
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answered Aug 15 '13 at 21:38
Viktor KerkezViktor Kerkez
35....
Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
... return x*2, x*3
...:
In [3]: df = DataFrame({'a': [1,2,3], 'b': [2,3,4]})
In [4]: df
Out[4]:
a b
0 1 2
1 2 3
2 3 4
In [5]: df["A1"], df["A2"] = zip(*df["a"].map(calculate))
In [6]: df
Out[6]:
a b A1 A2
0 1 2 2 3
1 2 3 4 6
2 3 4 6 9
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Detect if stdin is a terminal or pipe?
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140
Use isatty:
#include <stdio.h>
#include <io.h>
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if (isatty(fileno(stdin)))
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Overloading member access operators ->, .*
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147
->
This is the only really tricky one. It must be a nonstatic member function, and it takes...