toString method Null safety

  1. @override
String toString()
override

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string represetion.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Implementation

@override
String toString() {
  switch (_type) {
    case _kTypeMode:
      return 'ColorFilter.mode($_color, $_blendMode)';
    case _kTypeMatrix:
      return 'ColorFilter.matrix($_matrix)';
    case _kTypeLinearToSrgbGamma:
      return 'ColorFilter.linearToSrgbGamma()';
    case _kTypeSrgbToLinearGamma:
      return 'ColorFilter.srgbToLinearGamma()';
    default:
      return 'Unknown ColorFilter type. This is an error. If you\'re seeing this, please file an issue at https://github.com/flutter/flutter/issues/new.';
  }
}