Tutorial by Examples: a

Common inspector attributes

[Header( "My variables" )] public string MyString; [HideInInspector] public string MyHiddenString; [Multiline( 5 )] public string MyMultilineString; [TextArea( 2, 8 )] public string MyTextArea; [Space( 15 )] public int MyInt; [Range( 2.5f, 12.5f )] public float MyFlo...

unity3d • Attributes

Component attributes

[DisallowMultipleComponent] [RequireComponent( typeof( Rigidbody ) )] public class AttributesExample : MonoBehaviour { [...] } [DisallowMultipleComponent] The DisallowMultipleComponent attribute prevents users adding multiple instances of this component to one GameObject. [Requi...

unity3d • Attributes

Runtime attributes

[ExecuteInEditMode] public class AttributesExample : MonoBehaviour { [RuntimeInitializeOnLoadMethod] private static void FooBar() { [...] } [RuntimeInitializeOnLoadMethod( RuntimeInitializeLoadType.BeforeSceneLoad )] private static void Foo() { ...

unity3d • Attributes

Menu attributes

[AddComponentMenu( "Examples/Attribute Example" )] public class AttributesExample : MonoBehaviour { [ContextMenuItem( "My Field Action", "MyFieldContextAction" )] public string MyString; private void MyFieldContextAction() { [...] ...

unity3d • Attributes

Editor attributes

[InitializeOnLoad] public class AttributesExample : MonoBehaviour { static AttributesExample() { [...] } [InitializeOnLoadMethod] private static void Foo() { [...] } } [InitializeOnLoad] public class AttributesExample : MonoBeh...

unity3d • Attributes

Using .PHONY for non-files targets

Use .PHONY to specify the targets that are not files, e.g., clean or mrproper. Good example .PHONY: clean clean: rm *.o temp Bad example clean: rm *.o temp In the good example make knows that clean is not a file, therefore it will not search if it is or not up to date and will ex...

makefile • .PHONY target

Reading and writing data frames

Data frames are R's tabular data structure. They can be written to or read from in a variety of ways. This example illustrates a couple common situations. See the links at the end for other resources. Writing Before making the example data below, make sure you're in a folder you want to write to....

R Language • Input and output

Installation or Setup

Detailed instructions on getting core-bluetooth set up or installed.

core-bluetooth • Getting started with core-bluetooth

Type erasing type erasure with std::any

This example uses C++14 and boost::any. In C++17 you can swap in std::any instead. The syntax we end up with is: const auto print = make_any_method<void(std::ostream&)>([](auto&& p, std::ostream& t){ t << p << "\n"; }); super_any<decltype(print...

C++ • Type Erasure

Drawing two rectangles on a

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8" /> <title>Draw two rectangles on the canvas</title> <style> canvas{ border:1px solid gray; } </style> <script async...

HTML • Canvas

Adding dependencies using task names

We can change the tasks execution order with the dependsOn method. task A << { println 'Hello from A' } task B(dependsOn: A) << { println "Hello from B" } Adding `dependsOn: causes: task B depends on task A Gradle to execute A task everytime before the B ta...

gradle • Task dependencies

Adding dependencies from another project

project('projectA') { task A(dependsOn: ':projectB:B') << { println 'Hello from A' } } project('projectB') { task B << { println 'Hello from B' } } To refer to a task in another project, you prefix the name of the task with the path of the pr...

gradle • Task dependencies

Adding dependency using task object

task A << { println 'Hello from A' } task B << { println 'Hello from B' } B.dependsOn A It is an alternative way to define the dependency instead of using the task name. And the output is the same: > gradle -q B Hello from A Hello from B

gradle • Task dependencies

Adding multiple dependencies

You can add multiple dependencies. task A << { println 'Hello from A' } task B << { println 'Hello from B' } task C << { println 'Hello from C' } task D << { println 'Hello from D' } Now you can define a set of dependencies: B.dependsOn A...

gradle • Task dependencies

Synchronous IPC communication

Create index.js as const {app, BrowserWindow, ipcMain} = require('electron') let win = null app.on('ready', () => { win = new BrowserWindow() win.loadURL(`file://${__dirname}/index.html`) win.webContents.openDevTools() win.on('closed', () => { win = null }) }) ipcM...

electron • Main and renderer process.

Installation and Setup

To install React Router, just run the npm command npm install --save react-router And you're done. This is literally all you have to do to install react router. Please Note : react-router is dependent on react, So make sure you install react as well. To set up: using an ES6 transpiler, like bab...

React Router • Getting started with React Router

Draw behind existing shapes with "destination-over"

context.globalCompositeOperation = "destination-over" "destination-over" compositing places new drawing under existing drawings. context.drawImage(rainy,0,0); context.globalCompositeOperation='destination-over'; // sunny UNDER rainy context.drawImage(sunny,0,0);

html5-canvas • Compositing

Erase existing shapes with "destination-out"

context.globalCompositeOperation = "destination-out" "destination-out" compositing uses new shapes to erase existing drawings. The new shape is not actually drawn -- it is just used as a "cookie-cutter" to erase existing pixels. context.drawImage(apple,0,0); conte...

html5-canvas • Compositing

Default compositing: New shapes are drawn over Existing shapes

context.globalCompositeOperation = "source-over" "source-over" compositing [default], places all new drawings over any existing drawings. context.globalCompositeOperation='source-over'; // the default context.drawImage(background,0,0); context.drawImage(parachuter,0,0); ...

html5-canvas • Compositing

Clip images inside shapes with "destination-in"

context.globalCompositeOperation = "destination-in" "destination-in" compositing clips existing drawings inside a new shape. Note: Any part of the existing drawing that falls outside the new drawing is erased. context.drawImage(picture,0,0); context.globalCompositeOperation...

html5-canvas • Compositing