[英]RxJS / Angular Observables use 1 or multiple pipes?
Having the following (just a quick example):有以下(只是一个简单的例子):
observable.pipe(map( s => s.anything ))
.pipe(filter(t => t > 5))
.pipe(map( t => t+5))
.subscribe( XXX )
Why should I use 1 pipe instead?为什么我应该使用 1 个管道?
observable.pipe(
map( s => s.anything ), filter(t => t > 5),map( t => t+5))
.subscribe( XXX )
To me, the code is more nice and readable in the first case.对我来说,第一种情况下的代码更漂亮、更易读。 But no idea if that affects the behaviour anyway.
但不知道这是否会影响行为。
You should use a single pipe for that purpose.为此,您应该使用单个管道。 Having multiple pipes will serve no purpose or benefit, as the usage of pipes is to combine RxJS functional operators into a single chain.
拥有多个管道没有任何意义或好处,因为管道的用途是将 RxJS 功能运算符组合成一个链。
In order to make it more readable, you can do something like this, instead of having all the operators on 1 single line of code.为了使其更具可读性,您可以执行以下操作,而不是将所有运算符都放在 1 行代码中。
observable
.pipe(
map(s => s.anything ),
filter(t => t > 5),
map(t => t+5)
).subscribe(res => {
// do the rest
});
The official Angular guide has a good summary on the usage of pipes and other operators. Angular 官方指南对管道和其他运算符的使用有很好的总结。 You may read up more about it over here .
你可以在这里阅读更多关于它的信息。 You should read up about pipeable operators over here as well.
您也应该在这里阅读有关可管道操作符的信息。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.