No If Expression

if expressions should not be used.

Avoid

my_function(X) ->
    if
        X > 10 -> ok;
        true -> error
    end.

Prefer

my_function(X) ->
    case X > 10 of
        true -> ok;
        _Else -> error
        % ^ no binding required
    end.

Rationale

if expressions should be avoided in Erlang code because they are not as predictable or maintainable as other control flow mechanisms, such as case. The if expression in Erlang lacks an explicit else branch, which can lead to runtime errors if no condition is matched.

Options

• None.

Example configuration

{elvis_style, no_if_expression, #{}}