Looking to remove an array item from the nested array if subset array have value a null or 0(zero) using lodash. I tried filter but I am looking for best way in term of performance.
const arr = [["a","b","c"],["f","r","p",0],["r",22,null,"t"],["d","e","f"]];
console.log("arr", arr);
// output should be [["a","b","c"],["d","e","f"]]You can use filter() and some()
const arr = [["a","b","c"],["f","r","p",0],["r",22,null,"t"],["d","e","f"]];
let res = arr.filter(x => !x.some(a => a === null || a === 0))
console.log(res)
lodash : filter and includes functions:const arr = [["a","b","c"],["f","r","p",0],["r",22,null,"t"],["d","e","f"]];
const result = _.filter(arr, x => !_.includes(x, null) && !_.includes(x, 0))
console.log(result)<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.14/lodash.min.js"></script>ES6 : filter and some functions:const arr = [["a","b","c"],["f","r","p",0],["r",22,null,"t"],["d","e","f"]];
const result = arr.filter( x => !x.some(s => s === null || s === 0))
console.log(result)ES6 : reduce:const arr = [["a","b","c"],["f","r","p",0],["r",22,null,"t"],["d","e","f"]];
const result = arr.reduce( (acc, c) => {
if(c.some(x => x === null || x === 0)) {
return acc
}
return [...acc, c]
},[])
console.log(result)
//cost will not let modify the variable
let arr = [["a","b","c"],["f","r","p",0],["r",22,null,"t"],["d","e","f"]];
arr = arr.filter(aItem=>{
//compact will remove null, 0 , undefined values from array item
return aItem.length===_.compact(aItem).length;
});
console.log("...arr",arr);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.14/lodash.core.min.js"></script>You can try with filter() and some().
Please Note: The following solution will also work for other falsy inputs like "" and undefined.
Using Lodash:
const arr = [["a","b","c"],["f","r","p",0],["r",22,null,"t"],["d","e","f"],["d",undefined,"f"],["d","e","f",""]];
var res = _.filter(arr, a => !a.some(i => !i));
console.log(res);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.14/lodash.core.min.js" integrity="sha256-NAQPwApfC7Ky1Y54LjXf7UrUQFbkmBEPFh/7F7Zbew4=" crossorigin="anonymous"></script>Using Vanilla JS:
const arr = [["a","b","c"],["f","r","p",0],["r",22,null,"t"],["d","e","f"],["d",undefined,"f"],["d","e","f",""]];
var res = arr.filter(a => !a.some(i => !i));
console.log(res);