Icon constructor Null safety

const Icon(
  1. IconData? icon,
  2. {Key? key,
  3. double? size,
  4. double? fill,
  5. double? weight,
  6. double? grade,
  7. double? opticalSize,
  8. Color? color,
  9. List<Shadow>? shadows,
  10. String? semanticLabel,
  11. TextDirection? textDirection}
)

Creates an icon.

Implementation

const Icon(
  this.icon, {
  super.key,
  this.size,
  this.fill,
  this.weight,
  this.grade,
  this.opticalSize,
  this.color,
  this.shadows,
  this.semanticLabel,
  this.textDirection,
}) : assert(fill == null || (0.0 <= fill && fill <= 1.0)),
     assert(weight == null || (0.0 < weight)),
     assert(opticalSize == null || (0.0 < opticalSize));