08 2019 档案
摘要：```
// 更新flutter
flutter upgrade // Dart 构造函数默认值
ImageGridView({Key key, this.imgs, this.isEdit: false}) // flutter 更新包时卡死,命令行展示如下
Waiting for another flutter command to release the startup lock.....
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摘要：events.js 源码分析 1. 初始化 2.注册监听事件 js // 调用的是addListener EventEmitter.prototype.on = EventEmitter.prototype.addListener; EventEmitter.prototype.addListene
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