JAVASCRIPT

js get each pair of values from an array of objects

function uniquePairs(arr) {
    return arr.flatMap((item1, index1) =>
        arr.flatMap((item2, index2) =>
            (index1 > index2) ? [[item1, item2]] : []
        )
    );
}

js get each pair of values from an array

function uniquePairs(arr) {
    return arr.reduce((acc, current, i) =>
        [...acc, ...(arr.slice(i + 1).map(val => [current, val]))], []);
}