No Single-Clause Case Expressions

Single-clause case expressions should be avoided.

Avoid

case do:something() of
    {ok, Result} -> do:something("else")
end

Prefer

{ok, Result} = do:something(),
do:something("else")

Rationale

Using a case expression with only one clause is unnecessary and reduces code clarity. It adds syntactic overhead without providing meaningful branching logic. In such cases, a let-style assignment or direct pattern matching is typically more appropriate and idiomatic. Removing single-clause case expressions also improves readability and simplifies the control flow.

Options

• None.

Example configuration

{elvis_style, no_single_clause_case, #{}}