olexale

import 'dart:math' as math;

Future<void> main() async {
  final program = '(begin (define circle-area (lambda (r) (* pi (* r r)))) (circle-area 10))';
  print(eval(parse(program), standardEnv));
}

dynamic parse(String program) => parseTokens(tokenize(program));

List<String> tokenize(String program) => program

olexale

Future<void> main() async {
  // final program = '(define x 42)';
  final program = '(begin (define circle-area (lambda (r) (* pi (* r r)))) (circle-area 10))';
  print(parse(program));
}

dynamic parse(String program) => parseTokens(tokenize(program));

List<String> tokenize(String program) => program
    .replaceAll('(', ' ( ')

olexale

void main() {
  
  // Functor
  num plus3(num x) => x + 3;
  print(Just(2).fmap(plus3)); // Just 5
  print(Nothing<num>().fmap(plus3));
  
  print([1,2,3].map((x) => x + 2)); // (3, 4, 5)
  
  final foo = fmap((x) => x + 3, (x) => x + 2);

olexale

Feature: Counter
  Scenario: Initial counter value is 0
    Given the app is running
    Then I see {'0'} text

  Scenario: Tap the Plus icon increments the counter
    Given the app is running
    When I tap {Icons.add} icon
    Then I see {'1'} text

olexale

// GENERATED CODE - DO NOT MODIFY BY HAND
// ignore_for_file: unused_import, directives_ordering

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

import './step/the_app_is_running.dart';
import './step/i_see_text.dart';

void main() {

olexale

flutter pub run build_runner build - delete-conflicting-outputs
# or
flutter pub run build_runner watch - delete-conflicting-outputs

olexale

Feature: Counter
  Scenario: Initial counter value is 0
    Given the app is running
    Then I see {'0'} text

olexale

public interface IProfileApi
{
 Task<Profile> GetProfile(int id);
 Task<Profile> GetMyProfile();
 Task UpdateMyProfile(Profile profile);
 Task<IEnumerable<Post>> GetPosts(int profile);
 …
}

olexale

public class TransitionAnimator : UIViewControllerAnimatedTransitioning
{
  private const double _duration = 0.5;

  public CGRect ThumbnailFrame { get; set; }
  public UINavigationControllerOperation Operation { get; set; }

  public override void AnimateTransition(IUIViewControllerContextTransitioning transitionContext)
  {
    var presenting = Operation == UINavigationControllerOperation.Push;

olexale

private Task OpenDetails(BeatleModel beatle)
{
  MessagingCenter.Send<object, int>(this, "TransitionId", beatle.Id);
  ...
}