January 2013
Beginner to intermediate
624 pages
17h 18m
English
Content preview from Learn You Some Erlang for Great Good!Become 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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Chapter 30. Type Specifications and Dialyzer
This chapter focuses on Dialyzer, which is a very effective tool when it comes to analyzing Erlang code. It’s used to find all kinds of discrepancies, such as code that will never be executed, but its main use is to detect type errors in your Erlang code base. We’ll look at why Dialyzer was created, the guiding principles behind it, and its capabilities to find type-related errors. Of course, we’ll also work through a few examples of Dialyzer in use.
PLTs Are the Best Sandwiches
Our first step is to create Dialyzer’s persistent lookup table (PLT), which is a compilation of all the details Dialyzer can identify about the applications and modules that are part of your standard Erlang distribution, as well ...
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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.