Immutability: Dart vs. F#
Immutability is a very important part of Functional Programming. Dart and F# are two excellent modern languages that support immutability and functional programming constructs. However, Don Syme and the team designed F# explicitly for functional programming constructs. It is a “functional-first” language. Immutability is also an important part of Flutter, and there are now F# bindings for Flutter via the Fable compiler. So, this article compares immutability in the two languages and explores the two different approaches. Why Immutability? Immutability facilitates pure functions by disallowing mutable parameters to functions. Pure functions are simpler to test and maintain because they provide certain guarantees. We know that a pure function cannot modify anything about the inputs, there are no side effects, and the result will always be identical given that the inputs are identical. Structural equality allows a language to compare two immutable objects based on their contents instead of their object references. For...
Christian Findlay
Nov 05, 2022
