Tips for effectively combining the map and find functions in Typescript

I am attempting to generate an array of strings with a length greater than zero.

let sampleArray2:string[] = ["hello","world","angular","typescript"];
let subArray:string[] = sampleArray2
    .map(() => sampleArray2
        .find(val => val.length > 5)
    );
console.log(subArray);

Instead of the anticipated result of 

[ 'angular', 'angular', 'angular', 'angular' ]
, I am hoping for it to display [ 'angular', 'typescript' ]

I am specifically seeking a solution that utilizes both map and find together to achieve this. How can I correct this?

Note: While using filter would be a straightforward fix, I am exploring the possibility of combining map and find for the desired outcome.

javascripttypescriptlambdaarrow-functions

Answer №2

.search is not the ideal choice - opt for .sort.

Answer №3

It appears that the issue lies in your map() function producing 'angular' five times.

To maintain your data types and resolve this, consider utilizing filter with the following syntax: 

let subArray:string[]= sampleArray2.filter(value=>value.length>5)

Answer №4

Avoid using the functions map and find. Instead, opt for the function filter.

let sampleArray2 = ["hello", "world", "angular", "typescript"];
let subArray = sampleArray2.filter(val => val.length > 5);

console.log(subArray);

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