August 2016
Intermediate to advanced
635 pages
14h 5m
English
book
JavaScript: Functional Programming for JavaScript Developers
by Ved Antani, Simon Timms, Dan Mantyla
Content preview from JavaScript: Functional Programming for JavaScript DevelopersBecome 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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Function composition
Finally, we have arrived at function composition.
In functional programming, we want everything to be a function. We especially want unary functions if possible. If we can convert all functions to unary functions, then magical things can happen.
Note
Unary functions are functions that take only a single input. Functions with multiple inputs are polyadic, but we usually say binary for functions that accept two inputs and ternary for three inputs. Some functions don't accept a specific number of inputs; we call those variadic.
Manipulating functions and their acceptable number of inputs can be extremely expressive. In this section, we will explore how to compose new functions from smaller functions: little units of logic that combine ...
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