With DI, if GameField needs an ISpaceship, it sets up a dependency that looks like this:
ISpaceship <--------- 9 9 9(as if by magic)
There’s no reliance on dependency chains or factories. There are no dependencies
except the ones your class actually needs. And you never need to make the dependency
explicit (though of course you can choose to do so).
So how’s the “magic” work?
C#’s System.Reflection package allows a class to be deconstructed at runtime and
analyzed. It’s worth noting that this isn’t the fastest process, so we use it sparingly in
Strange, and so should you. When reflecting a class, we can examine its methods and
properties. We can see what its construction methods look like and what parameters they
require. By examining all these clues we can deduce what a class’s dependencies look
like, then provide them.
The code for setting up a dependency in Strange usually looks like this:
>?
900<
And how does Strange know what concrete class to provide for IInterface? You tell it by
binding 9dependencies in a central file called the9Context. As I’ve mentioned, the
“standard” Context isMVCSContext, which is a class you can extend to get all of
Strange’s wacky goodness. When extending MVCSContext, you can create your
bindings right in the extended class like so:
.7-%'.@A-%'0
Now, whenever a class requires an IWeapon, the concrete class PhaserGun is provided.
If you decide to change PhaserGun to SquirtCannon, you make no changes whatsoever
to Spaceship or to any other class. You simple remap:
.7-%'.$B#-%'0
Hey presto!9The Spaceship now uses a SquirtCannon. All this from simply a one-word
acknowledgement that this is a dependency to be injected:
$+$
剩余52页未读，继续阅读
小迪迪
- 粉丝: 1
- 资源: 3
我的内容管理
展开
最新资源
- C语言快速排序算法的实现与应用
- KityFormula 编辑器压缩包功能解析
- 离线搭建Kubernetes 1.17.0集群教程与资源包分享
- Java毕业设计教学平台完整教程与源码
- 综合数据集汇总：浏览记录与市场研究分析
- STM32智能家居控制系统：创新设计与无线通讯
- 深入浅出C++20标准：四大新特性解析
- Real-ESRGAN: 开源项目提升图像超分辨率技术
- 植物大战僵尸杂交版v2.0.88：新元素新挑战
- 掌握数据分析核心模型，预测未来不是梦
- Android平台蓝牙HC-06/08模块数据交互技巧
- Python源码分享：计算100至200之间的所有素数
- 免费视频修复利器：Digital Video Repair
- Chrome浏览器新版本Adblock Plus插件发布
- GifSplitter：Linux下GIF转BMP的核心工具
- Vue.js开发教程：全面学习资源指南
资源上传下载、课程学习等过程中有任何疑问或建议，欢迎提出宝贵意见哦~我们会及时处理！
点击此处反馈
