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When to make a type non-movable in C++11?
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17
+1 a less exotic example of something that can't be moved because it has a special address is a node in a directed graph structure.
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How to drop columns by name in a data frame
...ubset function. For example :
R> df <- data.frame(x=1:5, y=2:6, z=3:7, u=4:8)
R> df
x y z u
1 1 2 3 4
2 2 3 4 5
3 3 4 5 6
4 4 5 6 7
5 5 6 7 8
Then you can use the which function and the - operator in column indexation :
R> df[ , -which(names(df) %in% c("z","u"))]
x y
1 1 2
2 2 3
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iOS White to Transparent Gradient Layer is Gray
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7 Answers
7
Active
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Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined [
...Web Application Project on Eclipse Kepler on Mac OS X with java version "1.7.0_45"
2 Answers
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Calculate the number of business days between two dates?
...t businessDays = span.Days + 1;
int fullWeekCount = businessDays / 7;
// find out if there are weekends during the time exceedng the full weeks
if (businessDays > fullWeekCount*7)
{
// we are here to find out if there is a 1-day or 2-days weekend
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Update Item to Revision vs Revert to Revision
...copy which were made after the selected revision (in your example rev. 96,97,98,99,100)
Your working copy is now in modified state.
The file content of both scenarions is same, however in first case you have an unmodified working copy and you cannot commit your changes(as your workingcopy is not p...
Add legend to ggplot2 line plot
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answered Apr 27 '12 at 10:57
csgillespiecsgillespie
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Clang optimization levels
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157
I found this related question.
To sum it up, to find out about compiler optimization passes:
l...
Is it safe to ignore the possibility of SHA collisions in practice?
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Arslan Ali
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answered Oct 25 '10 at 12:14
Thomas PorninThomas...
How to access property of anonymous type in C#?
... Earwicker
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