{"ScriptPreparationCode":"var a = Array(50).map(i =\u003E Math.random());\r\nvar b = Array(50).map(i =\u003E Math.random());","TestCases":[{"Name":"immutable with concat","Code":"var other = a.concat(b)","IsDeferred":false},{"Name":"direct mutation with splice \u002B spread","Code":"a.splice(0, a.length, ...b);","IsDeferred":false}]}