toStringOrNull function

String? toStringOrNull(
  1. dynamic value
)

Convert any dynamic value to String or null safely.

Implementation

String? toStringOrNull(value) {
  if (value == null) return null;
  if (value is String) return value;
  if (value is int) return value.toString();
  if (value is double) return value.toString();
  if (value is bool) return value ? "true" : "false";
  return null;
}