In JavaScript, the three dots operator (…) means two things: When used as a spread operator, the three dots operator spreads the elements of an array where zero or more arguments are expected. A classic example of this is when merging two arrays. For example: Here the three dots operator spreads the elements of the […]
JavaScript Three Dots (…) Operator Made Easy (with Examples) Read More »
To calculate the average of an array in JavaScript: For example: Output: This is the quick answer. However, if this does not ring any bells, I recommend reading further. In this guide, you learn how to calculate the average of an array of numbers in three different ways: Before jumping into these, let’s make sure
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To redirect a web page with JavaScript, set the current page’s href property to a new URL. For example: To redirect a page with HTML, add a meta tag that: Sets the http-equiv attribute to “refresh”. Specifies the delay in the content attribute 0. Specifies the URL attribute in the content attribute to a desired
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To convert bytes into a string in Python, use the bytes.decode() method. For instance: Output: This is the quick answer. However, depending on the context and your needs, there are other ways to convert bytes to strings. In this guide, you learn how to convert bytes to string in 5 different ways in different situations.
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JavaScript is one of the most popular programming languages out there. It is used widely in the field of web development and it is an in-demand skill in the job market. Here is a comprehensive list of 100 programming interview questions and answers. In addition to interviews, these can be handy if you’re studying for
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In JavaScript, closure means an inner function can access variables that belong to the outer function. More importantly, this is possible even after the execution of the outer function. This article is split into two sections: In the quick explanation, you are going to learn how closures work in a nutshell with examples. In the
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In Swift, you can use the guard statement to guard your code. The guard blocks access to critical parts of your code if a condition is not met. The guard statement works very similarly to an if statement. The main difference is that the guard statement is used to continue running code if a condition
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Autoclosures in Swift In Swift, an autoclosure offers a way to write cleaner code by leaving curly braces out. To create an autoclosure, use the @autoclosure modifier in front of the closure type. An autoclosure itself does not accept any arguments. When an autoclosure is called, it simply returns the value of the expression returned by
@autoclosure in Swift: Simplify Closure Calls [Examples] Read More »
In Swift, Codable is a combination of Encodable and Decodable. Read my complete guide to JSON in case you’re unfamiliar with JSON. Practically every iOS app handles JSON data in one way or another. Thus, learning how to encode and decode JSON is necessary. Here is a quick example of how to: Output: If you
Codable in Swift: JSON Parsing Made Easy [in 2022] Read More »
In Python, super() method makes it possible to access the members of a parent class. To understand what is a parent class, you need to know what class inheritance means. Before jumping into the details, let’s see a quick example of using the super() method. For instance: Output: In this piece of code: In this
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