You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
11 lines
252 B
11 lines
252 B
export default function uniqueBy(arr, fn) {
|
|
var identifiers = new Set();
|
|
return arr.filter(function (item) {
|
|
var identifier = fn(item);
|
|
|
|
if (!identifiers.has(identifier)) {
|
|
identifiers.add(identifier);
|
|
return true;
|
|
}
|
|
});
|
|
}
|