joinClassNames function

String joinClassNames(
  1. Iterable<String?> values
)

Joins non-empty CSS class names with spaces.

Implementation

String joinClassNames(Iterable<String?> values) {
  return values
      .where((value) => value != null && value.trim().isNotEmpty)
      .map((value) => value!.trim())
      .join(' ');
}