Strategies for improving the efficiency of this loop function?

var tickers = [];

for (var i=0; i<reportsArray.length; i++) {
    tickers.push(reportsArray[i].ticker);
}

Is there a more efficient way to achieve the same result using lodash library? You can find more information about lodash here.

Here is an example of how objects in the reportsArray may be structured:

{
    added_epoch: 1452873186
    details: ""
    reason: ""
    term: "Google rocks!"
    ticker: "GOOG"
    user_id: 1346753
    username: "leon"
}

Answer №1

You can utilize Array.prototype.map() method for the task.

var stocks = reportsArray.map(function (report) {
    return report.stock;
});

If you prefer using Lodash, you can achieve the same outcome with _.map().

var stocks = _.map(reportsArray, function (report) {
    return report.stock;
});

Answer №2

One simple way to achieve this is:

const updatedTickers = reportsArray.map(report => report.ticker);

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