Js数组对象去重

arr=[
    {"index":0,"min":19,"num":11},
	{"index":1,"min":8,"num":11},
	{"index":2,"min":3,"num":33},
	{"index":3,"min":3,"num":27},
	{"index":4,"min":14,"num":44},
	{"index":5,"min":25,"num":11}
]

let obj = {};
let peon = arr.reduce((cur,next) => {
    obj[next.num] ? "" : obj[next.num] = true && cur.push(next);
    return cur;
},[]) 
console.log(peon);    
[
    {"index":0,"min":19,"num":11},
	{"index":2,"min":3,"num":33},
	{"index":3,"min":3,"num":27},
	{"index":4,"min":14,"num":44},
]