Tutorial by Examples: ed

import wx class MyFileDropTarget(wx.FileDropTarget): """""" def __init__(self, window): """Constructor""" wx.FileDropTarget.__init__(self) self.window = window def OnDropFiles(self, x, y, f...

The Jedis library is generally added to Java project using a dependency management system built into the build environment of the project. Two popular Java build systems are Maven and Gradle. Using Gradle To add the Jedis library to a Gradle project, you will need configure a repository and add a...

Using a Pool Most code will want to connect to Redis using a pool of shared connection objects. Connecting to Redis using a pool involves two different code block. At initialization time, your application needs to create the connection pool: JedisPoolConfig poolCfg = new JedisPoolConfig(); ...

It's possible to specify several type constraints for generics using the where clause: func doSomething<T where T: Comparable, T: Hashable>(first: T, second: T) { // Access hashable function guard first.hashValue == second.hashValue else { return } // Access compa...

Sometimes you want to switch off all previously registered listeners. //Adding a normal click handler $(document).on("click",function(){ console.log("Document Clicked 1") }); //Adding another click handler $(document).on("click",function(){ console.log(&q...

Note: The Redis project does not officially support Windows. However, the Microsoft Open Tech group develops and maintains this Windows port targeting Win64. Official redis.io/download You can choose to download different versions or the latest version of Redis github.com/MSOpenTech/redis/release...

Here, we try to explain OCP using codebase. First we'll show a scenario that violate OCP and then we'll remove that violation. Area Calculation (OCP violation Code) : public class Rectangle{ public double Width {get; set;} public double Height {get; set;} } public class Circle{ public do...

Renaming a variable or class is usually a tedious task, by searching for all the locations where it is used. This can be significantly speeded up by highlighting the word, pressing Alt+Shift+R and then typing the new word. Eclipse will automatically rename the word in every file where it is called. ...

Ordered broadcasts are used when you need to specify a priority for broadcast listeners. In this example firstReceiver will receive broadcast always before than a secondReceiver: final int highPriority = 2; final int lowPriority = 1; final String action = "action"; // intent filter ...

A docstring is a multi-line comment used to document modules, classes, functions and methods. It has to be the first statement of the component it describes. def hello(name): """Greet someone. Print a greeting ("Hello") for the person with the given name. &...

<div sec:authorize="isAuthenticated()"> This text is displayed for authenticated users. </div>

Tkinter support .ppm files from PIL(Python Imaging Library), .JPG, .PNG and .GIF. To import and image you first need to create a reference like so: Image = PhotoImage(filename = [Your Image here]) Now, we can add this image to Button and Labels like so using the "img" callback: Lbl ...

Sometimes, you need to override one or more attributes of a particular Data Access Class (DAC) field just for a particular screen, without changing the existing behavior for other screens. Replacing All Attributes Suppose the original DAC field attributes are declared as shown below: public class...

The MSBuildWorspace is built around the concept of handling MSBuild solutions (.sln files) and their respective projects (.csproj, .vbproj). Adding new projects and documents to this workspace is not supported. string solutionPath = @"C:\Path\To\Solution\Sample.sln"; MSBuildWorkspace ...

Swift: let services = [CBUUID(string: SERVICE1_UUID), CBUUID(string: SERVICE2_UUID)] centralManager.scanForPeripherals(withServices: services, options: nil) Objective C: NSArray *services = @[[CBUUID UUIDWithString:SERVICE1_UUID], [CBUUID UUIDWithString:SERVICE2_UUID]]; [centralManager scanFo...

it often happened some rows with format issue, data type issue rejected by copy command while try load it by copy command. the query return succeed but some of data rejected. To do troubleshooting save Rejected Data and Exceptions COPY large_tbl FROM :file1 ON site01, :file2 O...

Before deploying the angular project in server we need to build angular project for production. We also need to change the routing path in index.html file from <base href=”/”> to <base href=”./”> if it is not done then your project wouldn’t get loaded properly there will be some routing ...

interface IArrayWrapper { public function getProperties(): array; public function has(string $name): bool; public function __toString(); // ... }; /** * Lightweight in-place data wrapper. * Demonstrates usage of anonymous class in conjunction with interface. * * Pro...

Display Templates can be used to standardize the layout of an object, so let's now see how we can do the same thing for these objects when editing them. Just like display templates, there's two ways to call editor templates for a given type: Html.EditorFor() Html.EditorForModel() Editor templat...

So first we will create rails project and setup device create a rails application rails new devise_example now add devise to gem list you can find a file named 'Gemfile' at the root of rails project Then run bundle install Next, you need to run the generator: rails generate devise:insta...