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Web Development with MongoDB and Node.js by Jason Krol

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Conventions

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Make sure you've npm installed all of the required modules for this chapter and that they are saved to your package.json file."

A block of code is set as follows:

models.Image.aggregate({ $group : {
    _id : '1',
    viewsTotal : { $sum : '$views' }
}}, function(err, result) {
    var viewsTotal = 0;
    if (result.length > 0) {
        viewsTotal += result[0].viewsTotal;
    }
    next(null, viewsTotal);
});

When we wish ...

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