[英]How to unsubscribe from an RxJS 5 observable?
I have been using this pattern: 我一直在使用这种模式:
func myObservable() Observable<boolean> {
...
}
func myFunc() {
myObservable().subscribe((cond: boolean) => {
if (cond) {
// How do I unsubscribe here?
}
});
}
However I can't see any way to unsubscribe thereby maybe creating a memory leak. 但是我看不到任何取消订阅的方法,因此可能会造成内存泄漏。
The reason I ask is because Angular 2's HTTP client uses the same pattern - although I believe it auto-unsubscribes somehow and I would like to do the same. 我问的原因是因为Angular 2的HTTP客户端使用相同的模式 - 虽然我相信它会以某种方式自动取消订阅,我也想这样做。
You should do something like this: 你应该做这样的事情:
func myFunc() {
var subscription = myObservable().subscribe((cond: boolean) => {
if (cond) {
// How do I unsubscribe here?
subscription.unsubscribe()
}
});
}
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