Dart Documentationbot_qrQrErrorCorrectLevel

QrErrorCorrectLevel class

class QrErrorCorrectLevel {

  static const int L = 1;
  static const int M = 0;
  static const int Q = 3;
  static const int H = 2;

  // thesee *are* in order of lowest to highest quality...I think
  // all I know for sure: you can create longer messages w/ item N than N+1
  // I assume this correcsponds to more error correction for N+1
  static const List<int> levels = const[L,M,Q,H];

  static String getName(int level) {
    switch(level) {
      case L:
        return 'Low';
      case M:
        return 'Medium';
      case Q:
        return 'Quality';
      case H:
        return 'High';
      default:
        throw 'not supported';
    }
  }
}

Static Properties

const int H #

static const int H = 2;

const int L #

static const int L = 1;

const List<int> levels #

static const List<int> levels = const[L,M,Q,H];

const int M #

static const int M = 0;

const int Q #

static const int Q = 3;

Static Methods

String getName(int level) #

static String getName(int level) {
  switch(level) {
    case L:
      return 'Low';
    case M:
      return 'Medium';
    case Q:
      return 'Quality';
    case H:
      return 'High';
    default:
      throw 'not supported';
  }
}

Properties

final Type runtimeType #

inherited from Object

A representation of the runtime type of the object.

external Type get runtimeType;

Operators

bool operator ==(other) #

inherited from Object

The equality operator.

The default behavior for all Objects is to return true if and only if this and other are the same object.

If a subclass overrides the equality operator it should override the hashCode method as well to maintain consistency.

bool operator ==(other) => identical(this, other);

Methods

int hashCode() #

inherited from Object

Get a hash code for this object.

All objects have hash codes. Hash codes are guaranteed to be the same for objects that are equal when compared using the equality operator ==. Other than that there are no guarantees about the hash codes. They will not be consistent between runs and there are no distribution guarantees.

If a subclass overrides hashCode it should override the equality operator as well to maintain consistency.

external int hashCode();

noSuchMethod(String name, List args) #

inherited from Object

noSuchMethod is invoked when users invoke a non-existant method on an object. The name of the method and the arguments of the invocation are passed to noSuchMethod. If noSuchMethod returns a value, that value becomes the result of the original invocation.

The default behavior of noSuchMethod is to throw a noSuchMethodError.

external Dynamic noSuchMethod(String name, List args);

const Object() #

inherited from Object

Creates a new Object instance.

Object instances have no meaningful state, and are only useful through their identity. An Object instance is equal to itself only.

const Object();

String toString() #

inherited from Object

Returns a string representation of this object.

external String toString();