Tutorial by Examples: i

You can set the following flags in the constructor, or with setFlags(int flags) Paint.ANTI_ALIAS_FLAG Enable antialiasing, smooths the drawing. Paint.DITHER_FLAG Enable dithering. If color precision is higher than the device's, this will happen. Paint.EMBEDDED_BITMAP_TEXT_FLAG Enables the use o...

An Albers projection, or more properly, an Albers equal area conic projection, is a common conical projection and an official projeciton of a number of jurisdictions and organizations such as the US census bureau and the province of British Columbia in Canada. It preserves area at the expense of oth...

var foo = new uint8[12]; var bar = foo; assert (foo != bar); In this example, the both foo and bar possess a strong reference, but since uint8[] only support single ownership, a copy is made.

I use Spring Boot 1.4.4.RELEASE , with MySQL as the Database and Spring Data JPA abstraction to work with MySQL. Indeed ,it is the Spring Data JPA module that makes it so easy to set up Pagination in a Spring boot app in the first place. Scenario expose an endpoint /students/classroom/{id} . It wi...

A program can easily waste time by calling a processor-intensive function multiple times. For example, take a function which looks like this: it returns an integer if the input value can produce one, else None: def intensive_f(value): # int -> Optional[int] # complex, and time-consuming cod...

By default STI model class name is stored in a column named type. But its name can be changed by overriding inheritance_column value in a base class. E.g.: class User < ActiveRecord::Base self.inheritance_column = :entity_type # can be string as well end class Admin < User; end Migr...

Having type column in a Rails model without invoking STI can be achieved by assigning :_type_disabled to inheritance_column: class User < ActiveRecord::Base self.inheritance_column = :_type_disabled end

In a basic implementation the task module must define a run/1 function that takes a list of arguments. E.g. def run(args) do ... end defmodule Mix.Tasks.Example_Task do use Mix.Task @shortdoc "Example_Task prints hello + its arguments" def run(args) do IO.puts "Hello ...

Create setup script ~/.perlbrew.sh: # Reset any environment variables that could confuse `perlbrew`: export PERL_LOCAL_LIB_ROOT= export PERL_MB_OPT= export PERL_MM_OPT= # decide where you want to install perlbrew: export PERLBREW_ROOT=~/perlbrew [[ -f "$PERLBREW_ROOT/etc/bashrc" ]...

Presumably, your program will do something. Add your working code to the project in place of Program.fs. In this case, our task is to draw spirograph curves on a Window Canvas. This is accomplished using Spirograph.fs, below. namespace Spirograph // open System.Windows does not automatically o...

You have to create a XAML file that defines the main window that contains our menu and drawing space. Here's the XAML code in MainWindow.xaml: <!-- This defines the main window, with a menu and a canvas. Note that the Height and Width are overridden in code to be 2/3 the dimensions of the...

The XAML file for the spirograph parameters is below. It includes three text boxes for the spirograph parameters and a group of three radio buttons for color. When we give radio buttons the same group name - as we have here - WPF handles the on/off switching when one is selected. <!-- This fi...

namespace Spirograph type MainWindow(app: App, model: Model) as this = inherit MainWindowXaml() let myApp = app let myModel = model let whenLoaded _ = () let whenClosing _ = () let whenClosed _ = () let menuExitHandler _ = System.Wind...

<!-- All boilerplate for now --> <Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Application.Resources> </Application.Reso...

FitViewports are viewports that always maintain the aspect ratio. It does this by creating black bars on the edges where there is space left. This is one of the most commonly used viewports. Usage: private Viewport viewport; private Camera camera; public void create() { camera = new Ortho...

Transcript show: 'Hello World!'. This will print Hello World! to the Transcript window in Smalltalk. Transcript is the class that allows you to print to the Transcript window by sending the message show: to that object. The colon indicates that this message requires a parameter which is in this c...

Ping One of the most used command to delay for a certain amount of time is ping. Basic usage PING -n 1 -w 1000 1.1.1.1 REM the -n 1 flag means to send 1 ping request. REM the -w 1000 means when the IP(1.1.1.1) does not respond, go to the next command REM 1.1.1.1 is an non-existing IP so th...

Getting Started Install NuGet packages: Microsoft.AspNet.Identity.EntityFramework Microsoft.AspNet.Identity.Core Microsoft.AspNet.Identity.OWIN Register action - Account controller [HttpPost] [AllowAnonymous] [ValidateAntiForgeryToken] public async Task<ActionResult> R...

In MVC, there are some scenerios where you want to specify an action for routing purposes, either for a link, form action, or a redirect to action. You can specify an action via the MVC namespace. When given a Controller, such as HomeController: public class HomeController : Controller { pub...

By unlisted package, I mean a package that is not available through Package Control (yet). So, you can't find it in packagecontrol.io. BUT, you can still install it using Package Control, so you'll get all the advantages. For example, they'll be automatically updated, just like a "regular&quot...