Tutorial by Examples: d

The principle is essentially the same as for the Text widget, but a Grid layout is used to put the scrollbars around the widget. canvas = tk.Canvas(parent, width=150, height=150) canvas.create_oval(10, 10, 20, 20, fill="red") canvas.create_oval(200, 200, 220, 220, fill="blue")...

Ubuntu: lshw is a small tool to extract detailed information on the hardware configuration of the machine. It can report exact memory configuration, firmware version, mainboard configuration, CPU version and speed, cache configuration, bus speed, etc. $ sudo lshw | less (or more) $ sudo lshw -ht...

Ubuntu: $ cat /proc/cpuinfo Sample Output: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz stepping : 11 cpu MHz : 1596.000 cache size : 4096 KB physical id : 0 siblings ...

Follow following steps to try out a sample application on AWS ECS service as a proof of concept. Login to AWS management console and go to AWS service catalog - > Compute - > Ec2 Create a VM(EC2 instance) using amazon linux 64 bit OS, this we will use to configure docker, git, AWS ECS agen...

In this example, one of two different ImageViews should be translated from the ChooserFragment to the DetailFragment. In the ChooserFragment layout we need the unique transitionName attributes: <ImageView android:id="@+id/image_first" android:layout_width="wrap_content...

It has not been explained in the Tensorflow documentation how to load images and labels directly from a TXT file. The code below illustrates how I achieved it. However, it does not mean that is the best way to do it and that this way will help in further steps. For instance, I'm loading the labels ...

Django 1.9 added the Field.disabled attribute: The disabled boolean argument, when set to True, disables a form field using the disabled HTML attribute so that it won’t be editable by users. Even if a user tampers with the field’s value submitted to the server, it will be ignored in favor of t...

GameScene code example: import SpriteKit protocol GameViewControllerDelegate: class { func callMethod(inputProperty:String) } class GameScene: SKScene { weak var gameViewControllerDelegate:GameViewControllerDelegate? override func didMove(to view: SKView) { gameViewContro...

Navigate to phpMyAdmin by URL http://your_ip/phpmyadmin or http://localhost/phpmyadmin Login using username root and root password. Click on Databases tab. Enter database name, select collation (you may leave it to default) and click create. Click on Privileges tab and select "Add user a...

Online demo is here: http://ext4all.com/post/extjs-4-mvc-application-architecture.html Define a model: // /scripts/app/model/User.js Ext.define('AM.model.User', { extend: 'Ext.data.Model', fields: ['id', 'name', 'email'] }); Define a store with proxy: // /scripts/app/store/Users.js...

The function validateattributes can be used to validate an array against a set of specifications It can be therefore used to validate the input provided to a function. In the following example, the function test_validateattributes requires three input function test_validateattributes(input_1,in...

$ egrep '^(0|1)+ [a-zA-Z]+$' searchfile.txt 011 AaBBS

From the tool-bar open the Java Perspective. Create a new Java project Right-click into the Package Explorer, and from the menu select New -> Java Project In the upcoming dialog enter a project name, then click Finish. Now you have the new project in your workspace. Create a new Java ...

In Python 3.6, PEP 487 added the __init_subclass__ special method, which simplifies and extends class customization without using metaclasses. Consequently, this feature allows for creating simple plugins. Here we demonstrate this feature by modifying a prior example: Python 3.x3.6 class Base: ...

Flexbox or flexible box is a layout method for arranging content on a page in a predictable manner. Flexbox provides an improvement over traditional block model positioning using floats or even table like positioning for content on the page. At its core, Flexbox can be broken down into a parent ele...

Open Visual Studio and Select File -> New Project Select AWS Lambda Project with Tests (.NET Core) Next the Select Blueprint screen will display. Select Empty Function and Click the Finish button: Go to Tools -> NuGet Package Manager -> Package Manager Console. In the console win...

Open Function.cs and replace the class code with the following: public class Function { /// <summary> /// A simple function that takes a birth date and returns Age in years /// </summary> /// <param name="input"></param> /// <returns>Age is years&...

Right Click your project and select Publish to AWS Lambda... The Upload to AWS Lambda screen will appear. Make sure the correct region is selected. Keep all of the defaults. Then only enter the Function Name: AWSLambdaFunctionAgeInYears and then click next. On the next page, sele...

After Step 3 above, Visual Studio will open the View Function window with your function loaded. On the bottom left of this screen, enter the following json into the Sample Input box: { "month": "10", "day": "28", "year": "1979" } ...

A (m x n) matrix can be representes by a surface by using surf; The color of the surface is automatically set as function of the values in the (m x n) matrix. If the colormap is not specified, the default one is applied. A colorbar can be added to display the current colormap and indicate the map...