Functional programming can improve the overall design of application architecture.

Runar Bjarnason has been exploring how writing in a functional style increases the modularity and compositionality of software for many years. He is co-author of Functional Programming in Scala, a book that explores the relationship between functional programming and software design.

In this interview with guest host Adam Bell, Runar explains how writing in a functional style involves limiting side effects, avoiding exceptions, and using higher-order abstractions. Writing in this style places constraints on what a module in a software system may do, but by constraining modules in this way, the software modules themselves become endlessly composable.  

Functional Programming In Scala

Constraints Liberate, Liberties Constrain

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