June 2014
Intermediate to advanced
696 pages
38h 52m
English
Content preview from Node.js, MongoDB, and AngularJS Web DevelopmentBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Limiting Results by Size
The simplest way to limit the amount of data returned in a find() or another query request is to use the limit option in the options parameter when performing the request. The limit parameter, shown below, allows only a fixed number of items to be returned with the Cursor object. This can prevent you from accidentally retrieving more objects than your application can handle:
limit:<maximum_documents_to_return>
Listing 15.3 shows how to limit the results of a find() request by using the limit:5 option in the options object. The output in Figure 15.3 shows that when limit:5 is used, only five words are retrieved.
Listing 15.3 doc_limit.js: Limiting a specific set of documents in a MongoDB collection ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.