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Note This is a note

Warning This is a warning

Important

Crucial information necessary for users to succeed.

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version: "3.8"
services:
  service:
    build: .
    environment:
      # Node.js does not respect the system's CA store
      NODE_EXTRA_CA_CERTS: "/usr/local/share/ca-certificates/mitmproxy/mitmproxy-ca-cert.pem"
    volumes:
      - .mitmproxy:/usr/local/share/ca-certificates/mitmproxy
    ports:

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alias ..='cd ..'

alias dev='cd /Users/user/dev'

## compression/decompression
alias tarc='tar -cvfz'
alias tard='tar -xvfc'
## directory
alias mkdir='mkdir -p'
## docker

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const fs = require("fs");

const file = fs.readFileSync(0, { encoding: "utf8" });
const metrics = file
  .split("\n")
  // remove empty lines (i.e. EOL) and comments
  .filter((l) => !!l && !l.startsWith("#"))
  // only the metric name
  .map((l) => l.substring(0, l.search(/[^0-9a-z_]/gi)))
  .filter((metric) => metric.startsWith("nats_"))

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Legos of distributed systems

Two classes of handling;

• Syncronous, requests and responses
• Asynronous, eventing

The blocks and their problem statements

• 🧱 Discovery

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shell

ctrl + k: clear content to end of line
ctrl + r: (reverse) search through ~/.$SHELL_history
ctrl + a: go to beginning of line
ctrl + e: go to end of line
cd $PWD: refreshes referenced inode
!$: expands to last segment of previous command

signals:

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type Line = readonly [Vector, Vector];

class Vector {
  public constructor(
    public readonly x: number,
    public readonly y: number,
    public readonly z: number
  ) {}

  public subtract(other: Vector): void {

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const Scarcity = {
   Common: 'common',
   Rare: 'rare',
   OneInAMillion: 'one_in_a_million',
};

class Item {
   constructor(key, weight, scarcity) {
    this.key = key;
    this.weight = weight;

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import { ExtractJwt, Strategy } from 'passport-jwt';
import { PassportStrategy } from '@nestjs/passport';
import { Injectable } from '@nestjs/common';
import { passportJwtSecret } from 'jwks-rsa';
import { AppleJwtPayload } from './types';

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor() {
    super({

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const assert = require('assert');

function clampedAlphabeticAdd(num, amt) {
  const result = num + amt;
  if (result > 'z'.charCodeAt(0)) {
    return 'a'.charCodeAt(0) + (result - ('z'.charCodeAt(0) + 1)); // off by one from char codes starting at 0
  } else {
    return result;
  }
}