64
votes
29
answers
2.6K
views
Elegant way to check for missing packages and install them?
I seem to be sharing a lot of code with coauthors these days. Many of them are novice/intermediate R users and
61
votes
6
answers
1.9K
views
How do I install an R package from source?
A friend sent me along this great tutorial on webscraping NYtimes with R. I would really love to try it. Howev
61
votes
13
answers
903
views
How to find out which package version is loaded in R?
I am in a process of figuring out how to use my university cluster. It has 2 versions of R installed. System w
57
votes
12
answers
2.6K
views
How to unload a package without restarting R
I'd like to unload a package without having to restart R (mostly because restarting R as I try out differ
57
votes
8
answers
2.2K
views
What is the difference between require() and library()?
What is the difference between require() and library()?
53
votes
18
answers
820
views
How should I deal with "package 'xxx' is not available (for R version x.y.z)" warning?
I tried to install a package, using install.packages("foobarbaz") but received the warning Warning message
43
votes
12
answers
1.6K
views
Why does "npm install" rewrite package-lock.json?
I just recently upgraded to npm@5. I now have a package-lock.json file with everything from package.json. I
65
votes
15
answers
1.3K
views
How to list npm user-installed packages?
How do I list the user-installed package ONLY in npm? When I do npm -g list it outputs every package and their
57
votes
17
answers
3K
views
What is the difference between --save and --save-dev?
What is the difference between: npm install [package_name] and: npm install [package_name] --save and: npm i
57
votes
14
answers
2.2K
views
What's the difference between dependencies, devDependencies and peerDependencies in npm package.json file?
This documentation answers my question very poorly. I didn't understand those explanations. Can someone s
64
votes
30
answers
1.7K
views
Find the version of an installed npm package
How to find the version of an installed node.js/npm package? This prints the version of npm itself: npm -v &
56
votes
19
answers
2.9K
views
What's the difference between tilde(~) and caret(^) in package.json?
After I upgraded to the latest stable node and npm, I tried npm install moment --save. It saves the entry in t
59
votes
12
answers
1.4K
views
59
votes
4
answers
1.7K
views
What is thread safe or non-thread safe in PHP?
I saw different binaries for PHP, like non-thread or thread safe? What does this mean? What is the differen
