{"ScriptPreparationCode":"var data = R.indexBy(() =\u003E \u0027id\u0027, _.range(10000).map(n =\u003E ({id: n, title: \u0027test \u0027 \u002B n})));\r\nvar immutableData = Immutable.Map(data);\r\n\r\nconsole.log(data, immutableData);","TestCases":[{"Name":"Ramda","Code":"var result = R.assoc(\u00271001\u0027, \u0027changed title\u0027, data)[\u00271001\u0027];\r\nconsole.log(result);","IsDeferred":false},{"Name":"Immutable","Code":"var result = immutableData.set(\u00271001\u0027, \u0027changed title\u0027).get(\u00271001\u0027);\r\nconsole.log(result);","IsDeferred":false}]}