撰写每周挑战
描述
执照
Copyright 2020 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apach
牡蛎卡挑战赛
本周的挑战将从回顾上周我们在Boris Bikes中介绍的基础知识开始，使您有机会强化上周学到的知识。 然后，您将面临构建一个更加复杂的系统的挑战，该系统应该真正扩展您在Ruby，TDD和面向对象设计中的技能。
每周挑战用户故事
以下是您将为此项目工作的用户故事：
In order to use public transport
As a customer
I want money on my card
In order to keep using public transpor
