JavaScript
/***************************************************/
/** Merge 2 arrays of objects using underscore.js **/
/***************************************************/
//arr2 will be merged into arr1, arr1 will be extended as needed.
var arr1 = [{"id":"tradeSide","field":"counterpartyTradeSide","dataType":"STRING","title":"Cpty Trade Direction","sortBy":"counterpartyTradeSide","minWidth":100,"visible":true,"formatter":{}},{"id":"myUserRole","field":"myUserRole","dataType":"STRING","title":"User Role","sortBy":"myUserRole","minWidth":100,"visible":true,"formatter":{}},{"id":"myDesk","field":"myDesk","dataType":"STRING","title":"Desk","sortBy":"myDesk","minWidth":100,"visible":true,"formatter":{},"width":316},{"id":"me","field":"myTraderName","dataType":"STRING","title":"User ID","sortBy":"myTraderName","minWidth":100,"visible":true,"formatter":{}},
{"id":"owningGroup","field":"counterpartyDesk","dataType":"STRING","title":"Cpty Desk","sortBy":"counterpartyDesk","minWidth":100,"visible":true,"formatter":{}},{"id":"myUUID","field":"myUUID","dataType":"STRING","title":"UUID","sortBy":"myUUID","minWidth":100,"visible":false,"formatter":{}},];
var arr2 = [{"id":"tradeSide","field":"counterpartyTradeSide","dataType":"STRING","title":"Cpty Trade Direction","sortBy":"counterpartyTradeSide","minWidth":100,"visible":true,"formatter":{}},{"id":"myUserRole","field":"myUserRole","dataType":"STRING","title":"User Role","sortBy":"myUserRole","minWidth":100,"visible":true,"formatter":{}},{"id":"myDesk","field":"myDesk","dataType":"STRING","title":"Desk","sortBy":"myDesk","minWidth":100,"visible":true,"formatter":{},"width":316},{"id":"me","field":"myTraderName","dataType":"STRING","title":"User ID","sortBy":"myTraderName","minWidth":100,"visible":true,"formatter":{}},{"id":"myUUID","field":"myUUID","dataType":"STRING","title":"UUID","sortBy":"myUUID","minWidth":100,"visible":false,"formatter":{}},{"id":"owningGroup","field":"counterpartyDesk","dataType":"STRING","title":"Cpty 25...