mathesond2

React Performance

Notes From Steve Kinney's "React Performance" Frontend Masters Course

General

re: optimizations: "Start with a problem first, then solve it. dont go looking for problems."

"measure first before you optimize for performance. And then measure again."

mxstbr

Enable tab completion for JSX with Emmet in Atom

This guide assumes you have the emmet and language-babel packages already installed in Atom

1. Open the keymap.cson file by clicking on Atom -> Keymap… in the menu bar
2. Add these lines of code to your keymap:

'atom-text-editor[data-grammar~="jsx"]:not([mini])':

zaemiel

1. Go to Sublime Text to: Tools -> Build System -> New Build System 
and put the next lines:

{
    "cmd": ["python3", "-i", "-u", "$file"],
    "file_regex": "^[ ]File \"(...?)\", line ([0-9]*)",
    "selector": "source.python"
}

Then save it with a meaningful name like: python3.sublime-build

docapotamus

Swappiness controls the tendancy the kernel wishes to swap.

Even with free memory the kernel may swap.

100 means aggressively swap 0 means wait until the last minute to swap

To check current swappiness cat /proc/sys/vm/swappiness

kevincolten

GitHub Pages is great for building a personal or project website. It'll default to http://username.github.io, or you can even use your own custom domain name from services like Namecheap, which I will write about in another post soon.

So you set up your GitHub Page for yourself or project, but what if you want to show off some of your other projects you are working on. You can go the poor man's route, and simply just copy everything from another repository into a folder in your username.github.io repository, commit and push the changes to GitHub, and you'll be able to navigate to http://username.github.io/project.

But this comes with some seriously inconvienent and non-conventional drawbacks, such as duplication of code across repositories and manually copy/paste-ing everytime changes are made to update your hosted codebase. Good luck maintaining that.

The other

isaacs

echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh