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Managing iOS Simulators

List all simulators created

$ xcrun simctl list --json

Delete old and unavailable simulators

$ xcrun simctl delete unavailable

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Nest.js Cheatsheet

Nest CLI

• npm i -g @nestjs/cli

Packages

• yarn add class-validator class-transformer
• yarn add @nestjs/mapped-types

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"lint-staged": {
  "src/**/*.{js,jsx,ts,tsx,json}": [
    "prettier src --write",
    "eslint src --fix",
    "git add"
  ]
}

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Use https://regex101.com/ to validate the expressions.

1. Simple numbers only (no decimal and no fractions)

^(\d+)$

2. Decimal numbers

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[
  {
    "id": "Hsi0nPw7nZQ"
  },
  {
    "id": "U9trUYVrI20"
  },
  {
    "id": "9kY_e0z1rvA"
  },

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/* (320x480) iPhone (Original, 3G, 3GS) */
@media only screen and (min-device-width: 320px) and (max-device-width: 480px) {
    /* insert styles here */
}
 
/* (320x480) Smartphone, Portrait */
@media only screen and (device-width: 320px) and (orientation: portrait) {
    /* insert styles here */
}
 

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{
  // Configurações da fonte FiraCode
  "editor.fontFamily": "Fira Code",
  "editor.fontLigatures": true,

  // Demais configurações
  "workbench.colorTheme": "Omni",
  "workbench.iconTheme": "material-icon-theme",
  "workbench.startupEditor": "newUntitledFile",

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import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:splashscreen/splashscreen.dart';
import 'home_screen.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {

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import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:splashscreen/splashscreen.dart';
import 'home_screen.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {

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import 'package:flutter/material.dart';
import 'SegundaActivity.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Funcionamento do botão voltar',