{"ScriptPreparationCode":"var arr = new Array(15000);\r\narr.fill({ id: 0 });\r\narr = arr.map((el, idx) =\u003E el.id = idx);\r\nvar foo = Math.floor(Math.random() * 15000);","TestCases":[{"Name":"map","Code":"let new_a = {id: foo, new_a: true};\r\narr = arr.map(a =\u003E (a.id === foo ? new_a : a));","IsDeferred":false},{"Name":"findIndex","Code":"let new_a = {id: foo, new_a: true};\r\nlet i = arr.findIndex(a =\u003E a.id = foo);\r\narr[i] = new_a;","IsDeferred":false}]}