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Why do we have map, fmap and liftM?
... leads to people asking questions like this one); the Functor class is too common to ignore, and beginners are often confused by error messages anyway!
– C. A. McCann
Sep 18 '11 at 19:30
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Rollback to an old Git commit in a public repo
How can I go about rolling back to a specific commit in git ?
11 Answers
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dyld: Library not loaded: @rpath/libswift_stdlib_core.dylib
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UICollectionView auto scroll to cell at IndexPath
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I've found that scrolling in viewWillAppear may not work reliably because the collection view h...
I lose my data when the container exits
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You need to commit the changes you make to the container and then run it. Try this:
sudo docker pull ubuntu
sudo docker run ubuntu apt-get install -y ping
Then get the container id using this command:
sudo docker ps -l
Commit chan...
Diagnosing Memory Leaks - Allowed memory size of # bytes exhausted
...age collector. It uses reference counting to manage memory. Thus, the most common source of memory leaks are cyclic references and global variables. If you use a framework, you'll have a lot of code to trawl through to find it, I'm afraid. The simplest instrument is to selectively place calls to mem...
Painless way to install a new version of R?
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Just for completeness, there are some ways to prevent you from having this problem. As Dirk said, save your packages in another directory on your computer.
install.packages("thepackage",lib="/path/to/directory/with/libraries")
You...
In vim, how do I go back to where I was before a search?
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Use `` to jump back to the exact position you were in before you searched/jumped, or '' to jump...
HashSet vs LinkedHashSet
...t -------------
size add contains iterate
10 308 91 94
100 178 75 73
1000 216 110 72
10000 711 215 100
---------- LinkedHashSet ----------
size add contains iterate
10 350 65 ...
How to extract a string using JavaScript Regex?
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