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 20. The Count of Applications
Our ppool app has become a valid OTP application, and we now understand what this means. But wouldn’t it be nice to build an application that actually uses our process pool to do something useful? To push our knowledge of applications a bit further, we will write a second application. This one will depend on ppool but will be able to benefit from some more automation than our “nagger” from Chapter 19.
This application, which we will name erlcount, will have a somewhat simple objective: recursively look into some directory, find all Erlang files (ending in .erl), and then run a regular expression over the result to count all instances of a given string within the modules. The results are then accumulated to ...
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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.