RxJS - 對象的分區陣列

Question

如何對以下數組進行分區，使其分區爲30以下和30以上的數組。

我想下面的代碼將做到這一點，但它似乎只返回數組，而不是每個元素：

let ageArr = [ 
    { name: 'Ken', age: 28 }, 
    { name: 'Mary', age: 70 }, 
    { name: 'Kate', age: 12 }, 
    { name: 'David', age: 37 }, 
    { name: 'Laura', age: 42 }, 
    { name: 'Ian', age: 19 }, 
    { name: 'Peter', age: 21 }, 
    { name: 'Isobel', age: 55 }, 
    { name: 'Rebecca', age: 15 } 
]; 

let [under, over] = Oversable.of(ageArr).partition(person => person.age < 30); 

under.subscribe(a => console.log(a)); // [ { name: 'Ken', age: 28 }, { name: 'Kate', age: 12 }, { name: 'Ian', age: 19 }, { name: 'Peter', age: 21 }, { name: 'Rebecca', age: 15 } ] 
over.subscribe(a => console.log(a)); // [ { name: 'Mary', age: 70 }, { name: 'David', age: 37 }, { name: 'Laura', age: 42 }, { name: 'Isobel', age: 55 } ] 

但如上所述，這似乎不工作。任何想法如何實現我想要的？

Answer 1

您需要使用Observable.from

let ageArr = [ 
 
    { name: 'Ken', age: 28 }, 
 
    { name: 'Mary', age: 70 }, 
 
    { name: 'Kate', age: 12 }, 
 
    { name: 'David', age: 37 }, 
 
    { name: 'Laura', age: 42 }, 
 
    { name: 'Ian', age: 19 }, 
 
    { name: 'Peter', age: 21 }, 
 
    { name: 'Isobel', age: 55 }, 
 
    { name: 'Rebecca', age: 15 } 
 
]; 
 

 
let [under, over] = Rx.Observable.from(ageArr).partition(person => person.age < 30); 
 

 
under.subscribe(a => console.log("Under 30: " + a.name)); 
 
over.subscribe(a => console.log("Over 30: " + a.name));

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