malibayram

// static => bu kelimenin en temel varlık sebebi sınıftaki method veya property'e sınıftan örnek
// oluşturmadan erişmektir.
// factory => bu kelime sayesinde constructor methoduna müdahale imkanı elde ederiz.

class Kitap {
  final String baslik;

  static int? toplamKitapSayisi;

  static toplamdanDus() {

malibayram

import 'package:flutter/material.dart';

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// primitive (değer tipler) variables = değişkenler
// sayılar num, int, double
// metinsel ifadeler string
// evet-hayır ifadeleri bool

malibayram

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override

malibayram

import 'package:flutter/material.dart';

extension StringExts on String {
  String toLowerCaseTr() {
    return replaceAll('I', 'ı').replaceAll('İ', 'i').toLowerCase();
  }
}

void main() {
  runApp(

malibayram

import 'package:flutter/material.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';

const Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() async {
  try {
    WidgetsFlutterBinding.ensureInitialized();

malibayram

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';
import 'dart:math' show Random;

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

class MyApp extends StatelessWidget {

malibayram

import 'package:flutter/material.dart';

void main() {
  runApp(
    MaterialApp(
      theme: ThemeData(primarySwatch: Colors.indigo),
      home: MyHomePage(),
    ),
  );
}

malibayram

// Burada bir fonksiyon tanımı görüyoruz.
void sayiYazdir(int sayi) {
  // print ifadesini derinlemesine öğrenmek isteyenler => System call
  print("The number is $sayi"); // Print to console.
}

int toplamaIslemiYap(int sayi1, int sayi2) {
  return sayi1 + sayi2;
}

malibayram

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

void main() {
  sayiYazdir(sayi1: 5);

  runApp(BenimWidgetim());

malibayram

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// calback => başka bir fonksiyona parametre olarak gönderilen fonksiyon

// Birinci yönü kullanım şekli
// İkinci yönü ise tanımlanma şekli

import 'dart:io';