November 2016
Intermediate to advanced
697 pages
14h 44m
English
Content preview from Julia: High Performance ProgrammingBecome 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 3. Functions
Julia is foremost a functional language because computations and data transformations are done through functions; they are first-class citizens in Julia. Programs are structured around defining functions and to overload them for different combinations of argument types. This chapter discusses this keystone concept, covering the following topics:
- Defining functions
- Optional and keyword arguments
- Anonymous functions
- First-class functions and closures
- Recursive functions
- Map, filter, and list comprehensions
- Generic functions and multiple dispatch
Defining functions
A function is an object that gets a number of arguments (the argument list, arglist) as the input, then does something with these values in the function body, and returns none, ...
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