July 2019
Intermediate to advanced
310 pages
7h 26m
English
Content preview from Programming Elm
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Remove View Duplication
Now that you’ve split Msg, Model, and update into manageable pieces, you need to return to the view layer. In this section, you will create reusable helper functions to eliminate the excessive code duplication in viewBuild and make it easier to create new form inputs in the future.
Create a Reusable Section
Removing the input duplication will be tricky, so let’s start with the form sections. Notice that you repeat a section tag with a "salad-section" class name. Each of these sections has an h2 heading and form input content. First, you extract the creation of a form section into a reusable function. Add a viewSection function above viewBuild like so:
| | viewSection : String -> List ... |
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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.