Summary of Functional Programming in 40 Minutes • Russ Olsen • GOTO 2018

00:00:00 - 00:40:00

In this video, Russ Olsen discusses functional programming, explaining its benefits and how it differs from other programming paradigms. Olsen also discusses a pie chart illustrating the distribution of functional programming in various programming languages.

• 00:00:00 In this 40-minute talk, Russ Olsen discusses the origins of Functional Programming, its benefits, and how to apply it effectively. He also discusses the differences between Functional and Object-Oriented Programming, and how to transition from one to the other.
• 00:05:00 Russ Olsen discusses how functional programming helps to create a more organized and easier-to-maintain application. He also points out that while object-oriented programming can be messy at times, refactoring can help to remedy this.
• 00:10:00 In this 40-minute video, Russ Olsen explains how functional programming can help programmers tackle complicated problems more effectively. He points to the overlap between computer science and mathematics, and how mathematicians use similar principles when deriving mathematics from simple principles. Olsen describes how functions are a relationship between two sets, and how they're different from methods, subroutines, and procedures in programming. He notes that the mathematical idea of a function is different than our idea of a method, and that there is a difference in how these concepts are understood by programmers.
• 00:15:00 The video discusses how functional programming can help make programs easier to understand. The main rule is that you only look at your input, parameters, and output. This can be a big advantage because it eliminates side effects and makes code easier to read.
• 00:20:00 In this 40-minute video, Russ Olsen discusses functional programming, explaining that data structures in functional programming are immutable and support a "copy on modification" operation. Olsen walks through an example of how this would work for an array of English letters and an exclamation point, and concludes with a discussion of how this could be used to solve problems with data changes.
• 00:25:00 Functional programming provides an elegant and efficient solution to the challenge of integrating code from a purely functional world into a more stateful reality. In this video, Russ Olsen discusses functional programming in terms of its three key components: mathematical functions, immutable data structures, and side effects free code. Olsen then demonstrates how closures can be used to bridge the functional and stateful worlds, and how this approach can be powerful in applications such as web applications.
• 00:30:00 Functional programming is a programming paradigm that emphasizes the use of pure, mathematical functions to write code. It is similar to procedural programming, but with the added benefit of immutability and the ability to bridge between the functional world and the outside world. Although it has its own benefits, functional programming can be difficult to learn for new programmers, as there are still common programming errors.
• 00:35:00 Functional programming is a way of programming that reduces the amount of state a program needs to maintain. Pedestal, a production closure library, provides the plumbing a programmer needs to route requests to the right place, authenticate them, and do other tasks. Functional programming can make code easier to read and reason about.
• 00:40:00 Russ Olsen discusses functional programming, describing its benefits and how it differs from other programming paradigms. Olsen also discusses a pie chart illustrating the distribution of functional programming in various programming languages.