Detector class

Detector class is to detect language from specified text.

Its instance is able to be constructed via the factory class DetectorFactory. After appending a target text to the Detector instance with append(string), the detector provides the language detection results for target text via detect() or getProbabilities(). detect() method returns a single language name which has the highest probability. getProbabilities() methods returns a list of multiple languages and their probabilities. The detector has some parameters for language detection. See setAlpha(double), setMaxTextLength(int) setPriorMap(dict).

Example:

import 'package:flutter_langdetect/flutter_langdetect.dart';
import 'package:flutter/widgets.dart';
import 'package:logger/logger.dart';
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  DetectorFactory.profileBasePath = "assets/profiles/";
  await initLangDetect();
  final s = "Hello, world!";
  final langs = detect(s);
  logger.d("langs: ${langs}");
}

Constructors

Detector(DetectorFactory factory): Construct Detector instance.

Properties

alpha ↔ double: getter/setter pair
factory → DetectorFactory: final
hashCode → int: The hash code for this object.
no setterinherited
langList ↔ List<String>: getter/setter pair
langProb ↔ List<double>?: getter/setter pair
logger → Logger: final
maxTextLength ↔ int: getter/setter pair
nTrial ↔ int: getter/setter pair
priorMap ↔ List<double>?: getter/setter pair
random ↔ Random: getter/setter pair
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
seed ↔ int: getter/setter pair
text ↔ String: getter/setter pair
verbose ↔ bool: getter/setter pair
wordLangProbMap ↔ Map<String, List<double>>: getter/setter pair

Methods

append(String text) → void: Append the target text for language detection.
cleaningText() → void: Cleaning text to detect
detect() → String: Detect language of the target text and return the language name which has the highest probability.
getProbabilities() → List<Language>
getRandomElement(Random random, List<String> list) → String
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
setAlpha(double alpha) → void
setMaxTextLength(int maxTextLength) → void: Specify max size of target text to use for language detection.
setPriorMap(Map<String, double> priorMap) → void: Set prior information about language probabilities.
setVerbose() → void
toString() → String: A string representation of this object.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Properties

mailRe → RegExp: final
ureRe → RegExp: final

Constants

alphaDefault → const double
alphaWidth → const double
baseFreq → const int
convThreshold → const double
iterationLimit → const int
probThreshold → const double
unknownLang → const String