Learn Functional Programming with Elixir

Elixir Control-Flow Structures

Working with functional programming, we use function clauses to control the flow of the program. It’s the expected behavior of a functional programmer, but it doesn’t mean we can’t use some Elixir built-in control-flow structures, such as case, cond, if, and unless, to develop features quickly. We’ll see how each one can be useful and how it works.

Case: Control with Pattern Matching

case is useful when we want to check an expression with multiple pattern-matching clauses. It’s helpful for dealing with functions that may have an unexpected effect. To see how it works, we’ll change our script that calculates the abilities modifier for RPG players:

pattern_matching/lib/elixir_flows/case/ability_modifier.exs

user_input ...