The talk elaborates on the challenges , learnings and pitfalls of taking a team of Mainstream OO developers and build an application employing functional principles .

Unless starting from scratch, organisations would already have established tech stacks and ecosystem around hiring, training , tools and processes.

Bringing functional programming and articulating / demonstrating its benefits are only the beginning .

The devil is in the details of how the team reacts, gaining the confidence of engineers , educating the team and change the way engineers think, especially the established stars in the team.

This talk aims to provide an experience report and give insights to any mainstream team to start thinking and building software using functional programming.

It's another attempt to explain Monads to all those who are curious of this M-word.

The famous Mars Rover problem is used to demonstrate a solution for it using basic Haskell tools and then introduces Monads and demonstrates a solution using the State Monad.

This talk shares case study on how an application's design and architecture evolved when functional principles were applied and application was refactored.

The transformation of the architecture and how developers understood the structure of the application is also discussed.

It starts with outlining the basic use case, initial implementation tech stack and high level design and how iteratively the design was changed by applying the following FP principles.

1. No mutable global state

2. Use pure functions

3. Effects as Data and Restrict effects to outer ring of the application

Elm Lang changes the way UI is built and brings in reliability , robust architecture and functional principles as an alternative to JavaScript and numerous JavaScript frameworks.

In this session, attendees will be introduced to the basics of functional programming principles, using the Elm lang constructs, the Elm Architecture and how Elm enables easy and reliable refactoring.