November 2016
Intermediate to advanced
697 pages
14h 44m
English
Content preview from Julia: High Performance ProgrammingBecome 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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Dictionaries, sets, and others
In addition to arrays, Julia supports associative arrays, sets and many other data structures. In this section we will introduce a few.
Dictionaries
Associative arrays consist of collections of (key, values) pairs. In Julia associative arrays are called dictionaries (Dicts).
Let us look at a simple datatype to hold a user's credentials: ID, password, e-mail, and so on. We will not include a username as this will be the key to a credential datatype. In practice this would not be a great idea, as users often forget their usernames as well as their passwords!
To implement this we use a simple module. This includes a type and some functions which operate on that type. Note the inclusion of the export statement which makes ...
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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.