Angular5 + takeWhile不是一个函数(Angular5+ takeWhile is not a function)

Angular5 + takeWhile不是一个函数(Angular5+ takeWhile is not a function)

我有这样的代码：

public ngOnInit(){ this.schemeStore.getSchemesByAffId() .takeWhile(() => this.isAlive) .subscribe((schemes: Scheme[]) => { const currId = schemes[0].currency; this.schemeFunds$ = this.fundStore .getSchemeValorizationsByCurrency(currId); }); }

我甚至用以下方式导入了takeWhile：

import { takeWhile } from 'rxjs/operators';

但是我有这个错误信息：

ERROR TypeError: this.schemeStore.getSchemesByAffId(...).takeWhile is not a function

任何人有想法？

I have this code :

public ngOnInit(){ this.schemeStore.getSchemesByAffId() .takeWhile(() => this.isAlive) .subscribe((schemes: Scheme[]) => { const currId = schemes[0].currency; this.schemeFunds$ = this.fundStore .getSchemeValorizationsByCurrency(currId); }); }

I even imported the takeWhile with :

import { takeWhile } from 'rxjs/operators';

But i have this error message :

ERROR TypeError: this.schemeStore.getSchemesByAffId(...).takeWhile is not a function

Anyone has an idea ?

最满意答案

我想，错误的导入尝试：

import 'rxjs/add/operator/takeWhile';

wrong import I guess, try with:

import 'rxjs/add/operator/takeWhile';