February 2019
Beginner to intermediate
180 pages
4h 4m
English
Content preview from ReasonML Quick Start Guide
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makeBy
The makeBy function is like the make function, except it accepts a function used to determine the value of each item given the item's index.
The type of the makeBy function is as follows:
(int, int => 'a) => Belt.List.t('a)
We can use it to create a list of ten items, where each item is equal to its index:
let list = Belt.List.makeBy(10, i => i);
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.