Ir al contenido principal

Flutter / Basic Page

Basic Page

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
DbHelper helper = DbHelper();
return MaterialApp(
title: 'Todos',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Todos'),
);
}
}

class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);

final String title;

@override
_MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(widget.title),
),
body: TodoList(),
);
}
}

Comentarios

Publicar un comentario

Entradas populares de este blog

C# Using tabs

To use tabs in C# use the TabContainer element from AjaxControlToolkit Include AjaxControlToolkit  Include in the Web.config file, inside the tag <system.web> the following code  <pages>       <controls>         <add tagPrefix="ajaxCTK" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit"/>       </controls>     </pages>   Include TabContainer element First  include TabContainer element that is the section where all the tabs will be displayed. <ajaxCTK:TabContainer ID="TabContainerUpdate" runat="server"                 Height="800"                 CssClass="ajax__tab_style"> </ajaxCTK:TabContainer> Second per each tab include the following code corresponding to each ...
Publicar un comentario
Leer más

Python create package

Create a root folder Create a sub-folder "example_pkg" that contains the funtionallity packaging_tutorial/ example_pkg/ __init__.py In the root folder create the following structure  packaging_tutorial/ example_pkg/ __init__.py tests/ setup.py LICENSE README.md in the setup.py contains the configuration of the packages your package is found by find_packages() import setuptools with open ( "README.md" , "r" ) as fh : long_description = fh . read () setuptools . setup ( name = "example-pkg-YOUR-USERNAME-HERE" , # Replace with your own username version = "0.0.1" , author = "Example Author" , author_email = "author@example.com" , description = "A small example package" , long_description = long_description , long_description_content_type = "text/markdown" , url = "https://github.com/pypa/sam...
Publicar un comentario
Leer más

Rails - Basic Steps III

pValidations Validations are a type of ActiveRecord Validations are defined in our models Implement Validations Go to   root_app/app/models Open files  *.rb for each model Mandatory field validates_presence_of   :field Ex:   validates_presence_of    :title Classes The basic syntax is class MyClass        @global_variable                def my_method              @method_variable        end end Create an instance myInstance = MyClass.new Invoke a mehod mc.my_method class() method returns the type of the object In Ruby, last character of method define the behavior If ends with a question -> return a boolean value If ends with an exclamation -> change the state of the object Getter / Setter method def global_variable       return @global_variable end ...
Publicar un comentario
Leer más