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Simultaneously merge multiple data.frames in a list
...son purposes below, you'll find a base R version using the same sample dataset.
1) Join them with reduce from the purrr package:
The purrr package provides a reduce function which has a concise syntax:
library(tidyverse)
list(x, y, z) %>% reduce(left_join, by = "i")
# A tibble: 3 x 4
# i ...
How to compare a local git branch with its remote branch?
...branch you're tracking, use
git diff @{upstream}
if your upstream isn't set (commonly the case, thanks Arijoon in comments)
git diff @{push}
Courtesy of this answer, the git documentation for specifying revisions has:
<branchname>@{upstream}, e.g. master@{upstream}, @{u}
The suffix...
Something like 'contains any' for Java set?
I have two sets, A and B, of the same type.
9 Answers
9
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How to randomize (or permute) a dataframe rowwise and columnwise?
...s.
mat <- matrix(c(1,1,0,0,0,0,0,1,1,0,0,0,1,1,1,0,1,0,1,1), ncol = 5)
set.seed(4)
out <- permatswap(mat, times = 99, burnin = 20000, thin = 500, mtype = "prab")
This gives:
R> out$perm[[1]]
[,1] [,2] [,3] [,4] [,5]
[1,] 1 0 1 1 1
[2,] 0 1 0 1 0
[3,] ...
How do you merge two Git repositories?
...rebase -s subtree Bproject master If you don't do that, and you have pull set to rebase automatically, you'll end up with "Could not parse object". See osdir.com/ml/git/2009-07/msg01576.html
– Eric Bowman - abstracto -
Sep 16 '12 at 14:35
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Visual Studio 2010 - C++ project - remove *.sdf file
... -> Text Editor -> C/C++ -> Advanced
In the "Fallback Location", set "Always Use Fallback Location" to True and "Do Not Warn If Fallback Location Used" to True.
In "Fallback Location" you can either put a path like C:\Temp or if you leave it blank then VS will use the temporary directory...
Enable bundling and minification in debug mode in ASP.NET MVC 4
...and add a custom config section to your web.config (or at a minimum, an AppSetting entry.) That way, you can selectively enable/disable optimizations without having to do a rebuild.
– Joe the Coder
Feb 12 '14 at 15:58
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JSON to pandas DataFrame
What I am trying to do is extract elevation data from a google maps API along a path specified by latitude and longitude coordinates as follows:
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How to show line number when executing bash script
...cript which has a lot of commands and will generate lots of output, I use set -x or set -v and set -e , so the script would stop when error occurs. However, it's still rather difficult for me to locate which line did the execution stop in order to locate the problem.
Is there a method which can...
How to concatenate columns in a Postgres SELECT?
I have two string columns a and b in a table foo .
8 Answers
8
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