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Order data frame rows according to vector with specific order
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I prefer to use ***_join in dplyr whenever I need to match data. One possible try for this
left_join(data.frame(name=target),df,by="name")
Note that the input for ***_join require tbls or data.frame
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Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...项，记住，一定要把我们自己，也就是com.blogjava.youxia.rcp_start加进依赖项，否则会出错。最开始的时候，就是这么一点小问题，让我浪费了几天时间。
再点击添加必须的插件，自动添加其它的依赖项。
再下一步，...
What are the differences between Autotools, Cmake and Scons?
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In truth, Autotools' only real 'saving grace' is that it is what all the GNU projects are largely using.
Issues with Autotools:
Truly ARCANE m4 macro syntax combined with verbose, twisted shell scripting for tests for "compatibility", etc.
If you're not paying attention, you will mess u...
Difference between Math.Floor() and Math.Truncate()
...seems, simply because it can round to a specific number of decimal places. All the others round to zero decimals always. For example:
n = 3.145;
a = System.Math.Round (n, 2, MidpointRounding.ToEven); // 3.14
b = System.Math.Round (n, 2, MidpointRounding.AwayFromZero); // 3.15
With the other...
Merge (with squash) all changes from another branch as a single commit
In Git, is there a way to merge all changes from one branch into another, but squash to a single commit at the same time?
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Left align two graph edges (ggplot)
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Using cowplot package:
A <- ggplot(CO2, aes(x=Plant)) + geom_bar() +coord_flip()
B <- ggplot(CO2, aes(x=Type)) + geom_bar() +coord_flip()
library(cowplot)
plot_grid(A, B, ncol=1, align="v")
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Change Tomcat Server's timeout in Eclipse
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+1, all these years and I never knew that Server in the Servers tab was clickable and expandable. I was assuming right click had all the options available!
– Walls
Jul 30 '15 at 12:28
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switch case statement error: case expressions must be constant expression
...instead of an if-else:
private enum LayoutElement {
NONE(-1),
PLAY_BUTTON(R.id.playbtn),
STOP_BUTTON(R.id.stopbtn),
MENU_BUTTON(R.id.btnmenu);
private static class _ {
static SparseArray<LayoutElement> elements = new SparseArray<LayoutElement>();
}
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How do I make curl ignore the proxy?
... shell script) would temporarily change its value.
(See curl's manual for all the variables it looks at, under the ENVIRONMENT heading.)
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I ran into a merge conflict. How can I abort the merge?
... you to use the "theirs" merge strategy:
git pull --strategy=theirs remote_branch
But this has since been removed, as explained in this message by Junio Hamano (the Git maintainer). As noted in the link, instead you would do this:
git fetch origin
git reset --hard origin
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