Tutorial by Examples: io

Flexbox is a CSS3 module, standardized by the World Wide Web Consortium. It is a layout mode for element arrangement such that the elements behave predictably when the page layout must accommodate different display sizes. Because it is a part of CSS3, you don't need to install anything. It can be u...

To restrict the characters that can be typed into an entry widget, only numbers for instance, a validate command can be added to the entry. A validate command is a function that return True if the change is accepted, False otherwise. This function will be called each time the content of the entry is...

Detailed instructions on getting jq set up or installed. Install on Mac Using brew: $ brew install jq Then test: $ echo '{"name": "john"}' {"name": "john"} $ echo '{"name": "john"}' | jq '.' { "name": "john&quo...

The creators of Swift have put a lot of attention into making the language expressive and error handling is exactly that, expressive. If you try to invoke a function that can throw an error, the function call needs to be preceded by the try keyword. The try keyword isn't magical. All it does, is mak...

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...

Source Link Open the Terminal and write the following commands. 1-Update and upgrade package your system ubuntu: sudo su sudo apt-get -y update sudo apt-get -y upgrade sudo apt-get -y dist-upgrade sudo apt-get -y autoremove 2-Installing Dependenices: sudo apt-get install libopencv...

$ grep root /etc/passwd root:x:0:0:root:/root:/bin/bash operator:x:11:0:operator:/root:/sbin/nologin

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

$ fgrep "." .bashrc # will match lines with a dot.

The simple way to implement multi-threaded applications is to use Java's built-in synchronization and locking primitives; e.g. the synchronized keyword. The following example shows how we might use synchronized to accumulate counts. public class Counters { private final int[] counters; ...

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...

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" } ...

The create-* commands in Grails automatically create unit or integration tests for you within the src/test/groovy directory. It is of course up to you to populate these tests with valid test logic, information on which can be found in the section on Unit and integration tests. To execute tests you ...

Detailed instructions on getting alfresco-share set up or installed.

Detailed instructions on getting fonts set up or installed.

When investigating some geometric problem, there are a number of questions you might want to ask yourself to narrow down the scope of the question. How many dimensions are you dealing with? Is it 2d, 3d, a specific number of higher dimensions, or without respect to dimensionality? In case of a 2...

Overall you have two ways to monitor processes at linux host Static monitoring Most widely used command is ps (i.e., process status) command is used to provide information about the currently running processes, including their process identification numbers (PIDs). Here few useful options to gath...