ehpc

How to remember alignment in flexbox: justify vs align

First trick

justify is longer than align ⇒ longer means horizontal, so align means vertical by exclusion.

Second trick

justify is often used with text, and text is horizontal, so justify is horizontal, align is vertical by exclusion.

ehpc

#!/bin/sh
set -e

VM_NAME=vm-ubuntu-dev

[ ! -f ~/.ssh/id_rsa.pub ] && ssh-keygen -b 4096 -t rsa

SSH_KEY=$(cat ~/.ssh/id_rsa.pub)

tee ~/$VM_NAME.yaml >/dev/null <<EOF

ehpc

#!/bin/sh
# Calculates a metric of how many `any`'s are there compared to line count for TypeScript codebase (in percents)
# Basically we count all `any` occurences, then count all lines in the codebase, and lastly divide one by another

echo "scale = 4; $(find -name "*.ts?" -not -path "./node_modules/*" | xargs grep -o '\bany\b' | wc -l) * 100 / $(find -name "*.ts?" -not -path "./node_modules/*" | xargs wc -l | tail -1 | awk '{print $1}')" | bc

ehpc

function move(el, distance, duration) {
  let startTime;
  function recur() {
    window.requestAnimationFrame((time) => {
      if (startTime === undefined) {
        startTime = time;
      }
      const elapsed = time - startTime;
      const fraction = elapsed / duration;
      const dx = Math.min(distance, distance * fraction);

ehpc

// Custom promise-based compose
const composeWithPromise = (...args) =>
  R.composeWith((f, val) => {
    if (val && val.then) {
      return val.then(f);
    }
    if (Array.isArray(val) && val.length && val[0] && val[0].then) {
      return Promise.all(val).then(f);
    }
    return f(val);

ehpc

const MongoClient = require('mongodb').MongoClient;

const uri = 'mongodb://localhost:27017/';
const mongoClient = new MongoClient(uri, {
  useNewUrlParser: true,
  useUnifiedTopology: true,
});

(async () => {
  const connection = await mongoClient.connect();

ehpc

function heavyFunc() {
    const limit = Math.pow(10, 8);
    let res = 0;
    for (let i = 1; i < limit; i++) {
        res += Math.atan2(i, i) * Math.random();
    }
    return res;
}

async function heavyFuncWithAsync() {

ehpc

/**
 * Разные асинхронные паттерны в JS, решающие одну и ту же задачу
 */

///////////////// callbacks ///////////////////////////////////
function asyncFunction(callback) {
  setTimeout(callback.bind(this, 42), 100);
}

asyncFunction(console.log.bind(this, 'asyncFunction:'));

ehpc

const readline = require('readline');

const questions = [
  ['Can the fox be recursive?', 'O_o'],
  ['Can readline be non-recursive?', 'Yep']
];

const cmd = readline.createInterface({
  input: process.stdin,
  output: process.stdout

ehpc

const readline = require('readline');

const questions = [
  ['What does the fox say?', 'Yeeeee'],
  ['Will you be coding this weekend?', 'Whaaaatt?!']
];

const cmd = readline.createInterface({
  input: process.stdin,
  output: process.stdout