Tutorial by Examples: w

You can also use tee command to store the output of a command in a file and redirect the same output to another command. The following command will write current crontab entries to a file crontab-backup.txt and pass the crontab entries to sed command, which will do the substituion. After the substi...

You can pipe your output to multiple files (including your terminal) by using tee like this: $ ls | tee file1 file2 file3

A HandlerThread can be used to start a thread with a Looper. This looper then can be used to create a Handler for communications with it. HandlerThread thread = new HandlerThread("thread-name"); thread.start(); Handler handler = new Handler(thread.getLooper());

In this example, we will plot a sine curve and a hyperbolic sine curve in the same plot with a common x-axis having different y-axis. This is accomplished by the use of twinx() command. # Plotting tutorials in Python # Adding Multiple plots by twin x axis # Good for plots having different y axis ...

In this example, a plot with curves having common y-axis but different x-axis is demonstrated using twiny() method. Also, some additional features such as the title, legend, labels, grids, axis ticks and colours are added to the plot. # Plotting tutorials in Python # Adding Multiple plots by twin ...

const { expect } = require('chai') describe('Suite Name', function() { describe('#method()', function() { it('should run without an error', async function() { const result = await answerToTheUltimateQuestion() expect(result).to.be.equal(42) }) }) })

Java StringWriter class is a character stream that collects output from string buffer, which can be used to construct a string. The StringWriter class extends the Writer class. In StringWriter class, system resources like network sockets and files are not used, therefore closing the StringWriter i...

There are many ways to use MaterializeCSS framework. Few things to keep in mind before going to installation It is not a CSS only framwork, though it has CSS name in it. We can use its SCSS too It is not built for Angular It is a component framework too built on jquery. Though we are not supp...

It was most frequent question that can a same thread can be run twice. The answer for this is know one thread can run only once . if you try to run the same thread twice it will execute for the first time but will give error for second time and the error will be IllegalThreadStateException . exam...

app: ... environment: - var=value

You can check the version of Sass using sass -v Update all ruby gems gem update Update only Sass gem update sass

You can find a complete reference which CSS3 components are supported on this page In order to use CSS3 in your project Compass provides mixins to support CSS3 features in every browser. On top of your Sass/Scss file you have to specify that you want to use compass @import "compass/css3"...

Locate and open your TIBCO BW bwengine.tra file typlically under TIBCO_HOME/bw/5.12/bin/bwengine.tra (Linux environment) Look for the line that states: *** Common variables. Modify these only. *** Add the following line right after that section tibco.deployment=%tibco.deployment% ...

Valgrind provides you with the lines at which the error occurred at the end of each line in the format (file.c:line_no). Errors in valgrind are summarised in the following way: ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0) The most common errors include: Illegal read/write er...

Web Api 2 - Hello World example We are going to create a new Web Api simple application which return to us Json with message and user name. Lets start! First create new Web Api project using Visual Studio and select Empty Template. Be sure to check "Web Api" folder: NOTE I didn't choo...

Django Views are simply the functions that get called when a request is made to a certain URLs. URL patterns are written in urls.py file, each URL regex is given a function(Django view) from a views.py, so when a request is made, that function gets the call, with the HTTP request object, and then y...

string contents = ""; string url = "http://msdn.microsoft.com"; using (System.Net.WebClient client = new System.Net.WebClient()) { contents = client.DownloadString(url); } Console.WriteLine(contents);

import networkx as nx # importing networkx package import matplotlib.pyplot as plt # importing matplotlib package and pyplot is for displaying the graph on canvas b=nx.Graph() b.add_node('helloworld') b.add_node(1) b.add_node(2) '''Node can be called by any python-hashable obj like string,nu...

This is how you can react to exceptions which have not been catched, similar to the system's standard "Application XYZ has crashed" import android.app.Application; import android.util.Log; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.text....

A simple OGL 4.0 GLSL shader program that shows the use of a model, view, and projection matrix The program is executed with a phyton script. To run the script, PyOpenGL and NumPy must be installed. Projection matrix: The projection matrix describes the mapping of a pinhole camera from 3D poi...