rauschma

Cheat sheet: JavaScript Array methods

Deriving a new Array from an existing Array:

['■','●','▲'].slice(1, 3)          ⟼ ['●','▲']
['■','●','■'].filter(x => x==='■') ⟼ ['■','■']
    ['▲','●'].map(x => x+x)        ⟼ ['▲▲','●●']
    ['▲','●'].flatMap(x => [x,x])  ⟼ ['▲','▲','●','●']

textbook

Here is how to add Cypress E2E tests to a Create React App bootstrapped application. Assumes the *nix command line, you may need to adapt this for a Windows command line (or use WSL or Git Bash).

1. Install Cypress and the Testing Library utilities for it (to match the helpers CRA installs):

   $ npm i {,@testing-library/}cypress

   i is short for install, and the braces {} are expanded by brace expansion to cypress @testing-library/cypress.

weibeld

name: hello-world
on: push
jobs:
  my-job:
    runs-on: ubuntu-latest
    steps:
      - name: my-step
        run: echo "Hello World!"

sai-teja-ponugoti

rom tensorflow.keras.preprocessing.sequence import pad_sequences

sentences = ['I love my dog',
             'I love my cat',
             'you love my dog!',
             'Do you think my dog is amazing?',
             ]

tokenizer = Tokenizer(num_words = 100,oov_token="<OOV>")
tokenizer.fit_on_texts(sentences)

gwenf

• repo -> repository

• clone -> bring a repo down from the internet (remote repository like Github) to your local machine

• add -> track your files and changes with Git

• commit -> save your changes into Git

• push -> push your changes to your remote repo on Github (or another website)

• pull -> pull changes down from the remote repo to your local machine

• status -> check to see which files are being tracked or need to be commited

• init -> use this command inside of your project to turn it into a Git repository and start using Git with that codebase

jinglescode

Name	Latitude	Longitude	Cluster	Day
Athens International Airport	37.9356467	23.9484156	2	1
Acropolis of Athens	37.9715323	23.7257492	2	1
Pl. Agias Irinis 2	37.977418	23.7280221	2	1
Diporto - Secret underground restaurant	37.9806622	23.7257688	2	1
Temple of Zeus	37.9692838	23.7331012	2	1
Plaka	37.9725529	23.7303363999999	2	1
Temple of Olympian Zeus	37.9693	23.7331	2	1
Lake Vouliagmeni	37.8078002	23.7855018	2	1

tomhicks

/*
Copy this into the console of any web page that is interactive and doesn't
do hard reloads. You will hear your DOM changes as different pitches of
audio.

I have found this interesting for debugging, but also fun to hear web pages
render like UIs do in movies.
*/

const audioCtx = new (window.AudioContext || window.webkitAudioContext)()

willmendesneto

/* Highliting accessibility errors in HTML */

/* highlight HTML element with invalid value for lang attribute */
html:not([lang]),
html[lang=""] {
  border: 2px dotted red !important;
}

/*  highlight images missing alt text */
img:not([alt]) {

RecessPlayWorks

https://stackoverflow.com/questions/30443333/error-with-renamed-repo-in-github-remote-this-repository-moved-please-use-th


"
 git remote set-url origin [updated link url https://........git]
"

mempirate

const Web3 = require('web3');

class TransactionChecker {
    web3;
    web3ws;
    account;
    subscription;

    constructor(projectId, account) {
        this.web3ws = new Web3(new Web3.providers.WebsocketProvider('wss://rinkeby.infura.io/ws/v3/' + projectId));