Can anyone please explain what is exactly an ‘Activity’ means in Android ? An activity is your main “coarse” unit of user interface. It is roughly analogous to a screen, page, window, or other similar construct in other GUI environments. Or, to quote the documentation: An Activity is an application component that provides a screen … Read more
A few pieces of information that might help when looking at code like this: Calling an object or class as a function calls the appropriate apply method if there is one Parentheses are often optional so another way to rewrite the code above would be: val route = HttpService.apply({ case GET -> Root / “hello” … Read more
Introduction This article will provide a solution to a common jQuery mistake when attempting to compare two variables. We will discuss the different methods available to compare two variables, and provide an example of how to use the correct method to compare two variables. We will also discuss the potential pitfalls of using the wrong … Read more
jQuery uses CSS selectors. a[^=”https://stackoverflow.com/”] will select all <a> whose href attribute starts with / which are children of whatever the this is. See it in action: $(“ul”).each(function () { $(this).find(“a[href^=”https://stackoverflow.com/”]”).addClass(“selected”); }); .selected { background-color: lime; } <script src=”https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js”></script> <ul> <li><a href=”http://www.google.com”>Will not be selected</a></li> <li><a href=”http://stackoverflow.com/example”>Will be selected</a></li> </ul> <ul> <li><a href=”http://stackoverflow.com/example”>Yep</a></li> <li><a href=”http://www.google.com”>Nope</a></li> … Read more
Introduction HTML is a powerful language used to create websites and web applications. It is the foundation of the web and is used to structure and present content on the web. In this article, we will discuss how to refresh information in HTML. We will look at the different methods available to refresh information, such … Read more
Introduction This article will discuss how to use jQuery to do something after an element is clicked every 5 times. jQuery is a powerful JavaScript library that makes it easy to manipulate HTML elements on a web page. By using jQuery, you can create dynamic web pages that respond to user input. In this article, … Read more
You apparently want to filter out certain properties from the single element of your array, which is an object, containing subobjects, when the address property of the subobject matches one or more string values. Extract the first element of the array, then loop over its properties with a for…in loop. If the subproperty matches, delete … Read more
if (n == 0) not if (n=0) check your syntax careful. solved Unable to print recursive fibonacci sequence correctly
Introduction This post provides a solution to the problem of converting a text file into a matrix. The solution involves using a combination of programming languages such as Python, R, and MATLAB to read the text file and then convert it into a matrix. The post also provides a step-by-step guide on how to do … Read more
Introduction Reading .dat files in C++ can be a tricky task, especially if you are unfamiliar with the language. Fortunately, there are a few simple steps you can take to make the process easier. In this article, we will discuss how to read .dat files in C++, including the different methods available and the advantages … Read more
You need learn the basics of Angular 2 in order to understand these concepts. The [items]=”items” is data binding in Angular 2 to pass data from parent component to virtual-scroll component where “items” is the property in parent component and [items] is the property of child component viz. virtual-scroll. The = passes the data from parent component … Read more
This method will only loop each value once compared to other methods posted here. Instead of looping the full array I get unique values and count them with array_keys and count. $arrayName = array(1,2,1,3,4,3,2,5); $values = array_unique($arrayName); Foreach($values as $val){ $count[$val] = count(array_keys($arrayName, $val)); } Var_dump($count); https://3v4l.org/EGGJq In your example I think my method may … Read more
Introduction The System.Console.WriteLine and Console.WriteLine are two methods used to write output to the console window in C#. Both methods are used to display text, but there are some differences between them. In this article, we will discuss the differences between System.Console.WriteLine and Console.WriteLine and how they can be used in C# programming. Solution The … Read more
Introduction This question is a duplicate of a previously asked question. The question is about a NullPointerException that is thrown when a string is passed. This type of exception is thrown when a program attempts to use an object reference that has not been initialized. In this case, the string that is being passed is … Read more
Use return here, Change this if (substr($randomString, 0, 1) != 2) { // if doesn’t start with 2 generateRandomString($length, $alpha, $numeric); // try again } to if (substr($randomString, 0, 1) != 2) { // if doesn’t start with 2 return generateRandomString($length, $alpha, $numeric); // try again } 1 solved Recursive function doesn’t return [duplicate]