本文整理汇总了TypeScript中mongodb.Collection.count方法的典型用法代码示例。如果您正苦于以下问题：TypeScript Collection.count方法的具体用法？TypeScript Collection.count怎么用？TypeScript Collection.count使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类mongodb.Collection的用法示例。
在下文中一共展示了Collection.count方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1:
observerRightNeighbour => {
Observable.fromPromise<number>(this.userCollection.count({})).subscribe(count => {
if (+registeredNumber < count - 1)
this.getDataFromRegisteredNumber(registeredNumber + 1).subscribe((rightNeighbour: User) => observerRightNeighbour.onNext(rightNeighbour));
else
observerRightNeighbour.onNext(null);
});
}示例2:
readUser => {
if (readUser == null) {
Observable.fromPromise<number>(this.userCollection.count({})).subscribe(count => {
user.registeredNumber = count;
Observable.fromPromise<InsertOneWriteOpResult>(this.userCollection.insertOne(user)).subscribe(() => observer.onNext(true));
});
} else
observer.onNext(false);
}示例3: contains
public async contains(id: string): Promise<boolean> {
const count = await this.collection.count({id: id});
return count > 0;
}