我有一個庫存類。在那個類中,我有兩個函數,其中包含一組項。我想抓住兩個陣列中的所有物品,並將它們一起推入一個singel數組中,然後用它過濾出物品。將對象推入數組
class Inventory {
private _lions = [];
private _wolves = [];
private _allAnimals: Array<any> = [];
getAllLions(): void {
const lions: Array<ILion> = [
{ id: 1, name: 'Joffrey', gender: Gender.male, age: 20, price: 220, species: Species.lion, vertrabrates: true, warmBlood: true, hair: 'Golden', runningSpeed: 30, makeSound() { } },
{ id: 2, name: 'Tommen', gender: Gender.male, age: 18, price: 230, species: Species.lion, vertrabrates: true, warmBlood: true, hair: 'Golden', runningSpeed: 30, makeSound() { } },
{ id: 3, name: 'Marcella', gender: Gender.female, age: 24, price: 180, species: Species.lion, vertrabrates: true, warmBlood: true, hair: 'Golden', runningSpeed: 30, makeSound() { } },
];
for (let lion of lions) {
this._lions.push(lion);
}
}
getAllWolves(): void {
const wolves: Array<IWolf> = [
{ id: 1, name: 'Jon', gender: Gender.male, price: 130, species: Species.wolf, age: 13, vertrabrates: true, warmBlood: true, hair: 'Grey', runningSpeed: 30, makeSound() { } },
{ id: 2, name: 'Robb', gender: Gender.male, price: 80, species: Species.wolf, age: 18, vertrabrates: true, warmBlood: true, hair: 'Black', runningSpeed: 30, makeSound() { } },
{ id: 3, name: 'Sansa', gender: Gender.female, price: 10, species: Species.wolf, age: 35, vertrabrates: true, warmBlood: true, hair: 'Grey', runningSpeed: 30, makeSound() { } },
{ id: 4, name: 'Arya', gender: Gender.female, price: 190, species: Species.wolf, age: 8, vertrabrates: true, warmBlood: true, hair: 'White', runningSpeed: 30, makeSound() { } },
];
for (let wolf of wolves) {
this._wolves.push(wolf);
}
}
getAllAnimals(): void {
this._allAnimals = this._lions.concat(this._wolves);
};
findByTemplate(template: any): Array<any> {
return this._allAnimals.filter(animal => {
return Object.keys(template).every(propertyName => animal[propertyName] === template[propertyName]);
});
}
}
做爲獅子和狼的數組上的循環工作,但我寧願推動整個陣列的領域。但後來我在數組內引入一個數組,導致過濾函數出現問題。
是否有可能將獅子數組推入_lion字段,而不是將數組插入數組中?
你覺得有一個首選的方式來做到這一點?性能明智? –
我不知道性能是否明智,但將_adds_項目推送到數組,而concat _returns一個新的array_。所以它可能取決於你是否想保持你的源數組,或改變它。 –