(by @andrestaltz)
(orginal source: https://gist.github.com/staltz/868e7e9bc2a7b8c1f754)
casamia918
/ introrx.md
Last active
July 12, 2024 04:07
— forked from staltz/introrx.md
[Korean ver.] The introduction to Reactive Programming you've been missing
gunjanpatel
/ revert-a-commit.md
Last active
July 25, 2024 19:20
Git HowTo: revert a commit already pushed to a remote repository
Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.
git revert {commit_id}
Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:
takuma7
/ opencv-fourcc-on-mac-os-x.md
Last active
April 3, 2024 07:29
OpenCV Video Writer on Mac OS X
- x : not worked
- o: worked (able to open in quicktime but need conversion)
- oo: worked well (preview worked but wrong aspect ratio)
- ooo: worked very well (preview worked, and aspect ratio’s right)
(Codecs are extracted from https://web.archive.org/web/20120722124832/http://opencv.willowgarage.com/wiki/QuickTimeCodecs )
When hosting our web applications, we often have one public IP
address (i.e., an IP address visible to the outside world)
using which we want to host multiple web apps. For example, one
may wants to host three different web apps respectively for
example1.com, example2.com, and example1.com/images on
the same machine using a single IP address.
How can we do that? Well, the good news is Internet browsers
Previous versions used homebrew to install the various versions. As suggested in the comments, it's better to use pyenv instead. If you are looking for the previous version of this document, see the revision history.
$ brew update
$ brew install pyenv
$ pyenv install 3.5.0
$ pyenv install 3.4.3
$ pyenv install 3.3.6
$ pyenv install 3.2.6
$ pyenv install 2.7.10
$ pyenv install 2.6.9