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Suppose you are building an application that requires user interface and pops up a window on running the script. And let’s say you want to run that script inside a docker container. Now, you might expect the docker container to run the UI application for you and display the same on your screen. But using normal docker run commands, you won't be able to see or interact with the UI application. You need to connect the display with the container in order to do so. In this article, we will discuss how to do exactly the same.Here, we will see ... Read More
We know that we can run our docker images on cloud services which provide high computations in low cost prices. So, one might wonder why we need to optimize a docker image. Think of a situation where you have copied a large file in your docker container and you actually don’t need it. It’s obvious that it will increase the size of the docker image, it will increase the overall build time of the image and would cause a lot of caching issues as well. So, why not use a simple technique to avoid all these issues and improve the ... Read More
If you want to build a new container image, you need to specify the instructions in a separate document called Dockerfile. This will allow a developer to create an execution environment and will help him to automate the process and make it repeatable. It provides you with flexibility, readability, accountability and helps in easy versioning of the project.No doubt, writing a Dockerfile is one of the most important aspects of a project which includes development using docker. However, how you write a Dockerfile might have a great impact on the performance of your project if you are deploying it on ... Read More
It’s true that the use of docker has skyrocketed in recent times and it will continue to increase in the coming years. Most organizations are now shifting their projects to docker containers if they have not already. Thus, only acquiring basic knowledge regarding creating and maintaining docker containers and images is not enough to keep up with the pace of such a huge technological shift.Managing a large number of containers and images through a single command line interface (CLI) seems to be a tedious task, but with proper set of management skills and hands-on experience with docker CLI commands, this ... Read More
To populate select list with jQuery, use for loop along with append() and append the options to the already created select.Let’s say we have the following select with options − John David ExampleFollowing is the code to append more number of options using append() − Live Demo Document John David $(document).ready(function () { var data = [ { "name": "Bob", "customerName": "Bob" }, { "name": "Mike", "customerName": "Mike" } ]; for (var index = 0; index
To convert integer array to string array, use the map(String) in JavaScript. Let’s say the following is our integer array −var integerValues = [101, 50, 70, 90, 110, 90, 94, 68];Convert integer array to string array −integerValues.map(String);ExampleFollowing is the code −var integerValues = [101, 50, 70, 90, 110, 90, 94, 68]; console.log("The integer array value="); console.log(integerValues); integerValues.map(String); console.log("The string array value="); console.log(integerValues)To run the above program, you need to use the following command −node fileName.js.Here, my file name is demo212.js.OutputThe output is as follows in console −PS C:\Users\Amit\JavaScript-code> node demo212.js The integer array value= [ 101, 50, 70, 90, ... Read More
Let’s say we have the following button −On click of the above button, call the function() with on() −$('#buttonId').on('click', function () { displayTheData(); })The above function is using the html() to display the following div − I am inside the div tag... ExampleFollowing is the complete code to print div content − Live Demo Document I am inside the div tag... I am not inside the div tag... $('#buttonId').on('click', function () ... Read More
Let’s say the following is our first select − John David Bob Mike Sam Carol Following is our second select − David Mike Carol We need to remove the options in the first select, which are similar to options in the second select. For this, use val(). Following is the complete code −Example Live Demo Document John David Bob Mike Sam Carol David Mike Carol $('#remaining_name > option').each(function (i, el) { var value = $(el).val(); $('#all_present_name > option[value="' + value + '"]').remove(); }); OutputThe output is as follows −
In this problem, we are given a number N. Our task is to create a Program to find N-th term of series 3 , 5 , 21 , 51 , 95 , … in C++.Problem Description − To find the Nth terms of the series −3, 5, 21, 51, 95, 153, … N-TermsWe need to find the general formula of the series, which is a quadratic equation (based increase in the series).Let’s take an example to understand the problem, Input − N = 6Output − 153Solution Approach:To solve the problem, we will find the general formula for the nth term ... Read More
In this problem, we are given a number N. Our task is to create a Program to find N-th term of series 3, 6, 18, 24, … in C++.Problem Description − To find the Nth term of the series −3, 6, 18, 24, 45, 54, 84 … N TermsWe need to find the general formula for the given series.Let’s take an example to understand the problem, Input − N = 10Output − 150Solution Approach:To find the general term of the series, we will first observe the series and check all the possible generalizations of the series. Like, 3 is common ... Read More