DevKhalyd

#Discard local changes
git reset --hard

#Many operations separate by ; (semicolon)
$ git --version; git branch 

#Set alias to commands to access faster
$ git config --global alias.<alias-command> '<git command>'
$ git <alias-command>

DevKhalyd

_startFilePicker() async {
    
    InputElement uploadInput = FileUploadInputElement();
    uploadInput.accept = '.csv';
    uploadInput.click();

    uploadInput.onChange.listen((e) {
      // read file content as dataURL
      final files = uploadInput.files;
      if (files.length == 1) {

DevKhalyd

//Source: https://stackoverflow.com/questions/58248277/how-to-specify-a-port-number-while-running-flutter-web
//Go to root project create .vscode > launch.json and then put the following code
//In web server
{
 "version": "0.2.0",
 "configurations": [{
        "name": "Flutter",
        "request": "launch",
        "type": "dart",

DevKhalyd

// Let's say we want our cat name to be null
// For that, we add ? after the String type
String? name = getCatName();
// Use ?. instead of . with a nullable variable
print('${name?.length}');
// Note: the Cat constructor should allow a nullable name
final cat = Cat(name);


// Let's say the Cat constructor doesn't allow a nullable name

DevKhalyd

//yaml: shared_preferences:
//main.dart

void main() async {
  
  WidgetsFlutterBinding.ensureInitialized();
  final prefs = new MyShPrefs();
  await prefs.initPrefs();

  runApp(...);

DevKhalyd

import 'package:flutter/material.dart';

class CircularProgressCustom extends StatelessWidget {

  final Color color;
  
  const CircularProgressCustom({this.color = Colors.blue});

  @override
  Widget build(BuildContext context) => Center(

DevKhalyd

/// Takes a list of two numbers of some num-derived type [T].
T sumPair<T extends num>(List<T> items) {
  return items[0] + items[1];
}

DevKhalyd

https://www.mit.edu/afs.new/sipb/user/ssen/src/curl-7.11.1/docs/curl.html More info about the commands
$ curl --help
Usage: curl [options...] <url>
     --abstract-unix-socket <path> Connect via abstract Unix domain socket
     --alt-svc <file name> Enable alt-svc with this cache file
     --anyauth       Pick any authentication method
 -a, --append        Append to target file when uploading
     --basic         Use HTTP Basic Authentication
     --cacert <file> CA certificate to verify peer against
     --capath <dir>  CA directory to verify peer against

DevKhalyd

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'dart:io' show Platform;

///This dialog is for informationb
///(This widget returns an Alert to specify plattform)
class AlertPlatform extends StatelessWidget {
  final String title, description, textPositive, textNegative;
  final Widget content;

DevKhalyd

import 'package:flutter/material.dart';

///Default to vertical
class Space extends StatelessWidget {
  final double space;
  final bool isHorizontal;

  const Space(this.space, {this.isHorizontal = false});

  @override