November 2019
Intermediate to advanced
336 pages
11h 30m
English
Content preview from Programming with Types
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Types and possible values
|
Name [Section] |
TypeScript type |
Possible values |
|---|---|---|
| Empty type [2.1.1] | never | No possible values |
| Unit type [2.1.2] | void | One possible value |
| Sum type [3.4.2] | number | string | A value from number or a value from string |
| Tuple (product type) [3.1.1] | [number, string] | A value from number and a value from string |
| Record (product type) [3.1.2] | { a: number; b: string; } | A (named) value from number and a (named) value from string |
| Function type [5.1.2] | (value: number) => string | A function number → string |
| Top type [7.2.1] | unknown | A value of any type |
| Bottom type [7.2.2] | never | No possible values (the bottom type is the subtype of any other type) |
| Interface [8.1] | interface ILogger { /* ... */ } | Object of a ... |
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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.