How to fully dump / print variable to console in the Dart language?

Question

Hey there I am searching for a function which is printing a dynamic variable as completely as possible to the console in Dart language.

In PHP for i

Answer 1

use await keyword with an object in async function void _registerUser() async { print(await form.result); }

Answer 2

If you want to know more about an instance of any class in an android studio click on a class name before variable then press ctrl+b it will take you to the class file where this object belongs from there you can see user attributes and methods of this class.

Answer 3

Instance of 'FooBarObject' This happens when you try to directly do print(object);

Even if you use convert package from flutter, it would throw Uncaught Error: Converting object to an encodable object failed:

To resolve this issue, first, make sure your model class or data class contains fromJson and toJson methods.

If you do so, your model class would look like this.

class User {
  String name;
  String gender;
  int age;

  User({this.name, this.gender, this.age});

  User.fromJson(Map<String, dynamic> json) {
    name = json['name'];
    gender = json['gender'];
    age = json['age'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['name'] = this.name;
    data['gender'] = this.gender;
    data['age'] = this.age;
    return data;
  }
}

And to print this as json import convert package

import 'dart:convert';

And call json.encode

//after initializing the user object
 print('value is--> ' + json.encode(user);

Which will print the data as

value is--> {"name": "Vignesh","gender": "Male","age": 25}

Answer 4

If it's a map then you can convert to JSON. First import convert package from flutter.

import 'dart:convert';

then convert to JSON and print

print(json.encode(yourMapVariable));

Answer 5

Try this one..

  void printWrapped(String text) {
    final pattern = new RegExp('.{1,800}'); // 800 is the size of each chunk
    pattern.allMatches(text).forEach((match) => print(match.group(0)));
  }

Answer 6

Simple little trick does the job

void printObject(Object object) {
  // Encode your object and then decode your object to Map variable
  Map jsonMapped = json.decode(json.encode(object)); 

  // Using JsonEncoder for spacing
  JsonEncoder encoder = new JsonEncoder.withIndent('  '); 

  // encode it to string
  String prettyPrint = encoder.convert(jsonMapped); 

  // print or debugPrint your object
  debugPrint(prettyPrint); 
}

// To use simply pass your object to it
printObject(yourObject);