如何将几个数组运算符合并为一个？ Javascript

Question

如果可能，我想将运算符合并到一行代码中？

this.markers = [...new Map(this.markers.map(address => [Number(address.latitude), address])).values()] 
this.markers = this.markers.filter(marker => marker.hasOwnProperty('pointId'))

如果我可以将这两条线与一条连接起来？

Answer 1

我会提前过滤，然后得到映射的结果。

this.markers = [...new Map(this.markers
    .filter(marker => marker.hasOwnProperty('pointId'))
    .map(address => [+address.latitude, address])
).values()];