上下文绑定的困扰 箭头函数最显著的特点是不绑定自身的 this，而是继承外部作用域的 this 值。这在某些情况下可以简化代码，但在其他情况下却可能导致难以预料的错误。例如，在对象方法中，箭头函数无法正确绑定到对象的上下文，导致 this.data ...

在Java的世界里，箭头函数因其简洁的语法和优雅的表现方式而受到开发者的广泛喜爱。然而，令人意外的是，许多大型科技公司，如Facebook，开始对箭头函数的使用进行限制。这一转变并非无缘无故，而是源于实际开发中的诸多经验教训。 首先，箭头函数最显著的特点是不绑定自己的this，而是继承外部作用域的this值。乍一看，这似乎是个优点，但在某些场景中却可能引发严重的bug。例如，考虑下面的代码： 在调 ...

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