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@yang-wei
yang-wei / decode.md
Last active April 2, 2024 20:18
Elm Json.Decode tutorial and cheatsheet

When receiving JSON data from other resources(server API etc), we need Json.Decode to convert the JSON values into Elm values. This gist let you quickly learn how to do that.

I like to follow working example code so this is how the boilerplate will look like:

import Graphics.Element exposing (Element, show)
import Task exposing (Task, andThen)
import Json.Decode exposing (Decoder, int, string, object3, (:=))

import Http
@ilfroloff
ilfroloff / ClassA.js
Last active March 4, 2024 09:01
JavaScript Singleton using class
'use strict';
import Singleton from 'Singleton';
class ClassA extends Singleton {
constructor() {
super();
}
singletonMethod1() {
// ...
@revolunet
revolunet / ffmpeg-tips.md
Last active October 6, 2023 17:47
ffmpeg tips

libcaca output from your OSX webcam

ffmpeg -f avfoundation -framerate 30 -s "640x480" -i "0" -c:v rawvideo -pix_fmt rgb24 -f caca -s "640x480" output4.mp4

brew install ffmpeg with options

brew install homebrew-ffmpeg/ffmpeg/ffmpeg --with-libcaca

convert to another format, resize withouth quality loss

ffmpeg -i vitrine.mp4 -vf scale=1024:-1 -q:vscale 0 vitrine.avi