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📅  最后修改于: 2022-03-11 14:59:14.990000             🧑  作者: Mango
const ob$: Observable = of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10).pipe(filter( v => v % 2 === 0), map( v => v * 10));