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If you are running XAMPP on macOS, you may run into a variety of problems that may prevent you from starting the program. One of these problems is an error that says “cannot calculate MAC address” when you try to start the program.
If your error message says something else, you may want to check out the other articles on XAMPP for macOS:
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If you’re just starting your foray into the world of web development, you’re probably wondering what kind of code editor or Integrated Development Environment (IDE) to use. In most other branches of coding, like application or games development, you’re probably only going to deal with 1 or 2 programming languages concurrently. In web development, however, you’re almost always going to be dealing with at least 3 languages concurrently, so it’s going to feel very different from almost any other branch of coding.
Especially if you’re new to web development, having to deal with so many languages in one go (and having to be familiar with the native libraries of each of the languages) can be rather overwhelming, and the developers of CodeLobster IDE seem to understand this very well.
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This article is a part of the series:
Creating a Farming RPG (like Harvest Moon) in Unity
Ever wanted to create a game like Harvest Moon in Unity? Check out Part 15 of our guide here, where we go through how to create a dialogue system and create the relationships with other characters aspect of the game. You can also find Part 14 of our guide here, where we went through how to set up scene transitions.
A link to a package containing the project files up to Part 15 of this tutorial series can also be found at the end of this article, exclusive to Patreon subscribers only.
What are enums anyway, and what are they used for? Well, just think of it as yet another tool in your handy Java toolbox of things you can consider using to improve your efficiency and organisation of your program.
In this article, we are going to explore what enums are, and how they can be used in Java, by considering a piece of Java code that uses enums to recreate the type effectiveness system found in Pokémon.
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Unlock Contentvertical-align: middle work? How to vertically-centre elements in HTML and CSSIf you are new to working with CSS, you may find that the language comes with its fair share of quirks that can be frustrating, such as the text-align attribute not always working at horizontally-aligning your content.
In a similar way to text-align, the vertical-align attribute doesn’t always work at aligning your content vertically. Take the following HTML code for example:
If you have a WordPress site that was built before August 2020 (when WordPress 5.5 decided to stop supporting jQuery Migrate), or if you manage a site that recently weaned off jQuery Migrate, you might run into errors where the parts of your site that run on Javascript stop working.
When you open the Developer tools of your browser (that’s the F12 key for most browsers), you might also see an error message that looks something like this.
Uncaught TypeError: e.indexOf is not a function
at S.fn.load (jquery.min.js?ver=3.6.0:2:84932)
at headings.min.js?ver=3.19.4:1:2579
at headings.min.js?ver=3.19.4:1:2706
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This article is a part of the series:
Creating a Farming RPG (like Harvest Moon) in Unity
Ever wanted to create a game like Harvest Moon in Unity? Check out Part 14 of our guide here, where we go through how to set up the currency and shop system. You can also find Part 13 of our guide here, where we went through how to set up the main menu and generate obstacles.
A link to a package containing the project files up to Part 14 of this tutorial series can also be found at the end of this article, exclusive to Patreon supporters only.
In the previous part of this tutorial series, we set up DKIM, DMARC and rDNS on mail server to make emails from our mail server more deliverable, as these protocols make it less likely that other mailboxes will flag our emails as spam.
With that set up, we can now turn our attention to something else. Currently, any incoming mail to one of your domain emails will fail the SPF check for the domain.
Java has a unique class of exceptions called checked exceptions. These exceptions are also called compile-time exceptions, because they are caught when the code is compiled, rather than when an error occurs, like most other exceptions.
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In Java, coders are discouraged from calling setter functions in class constructors. Even though doing so can sometimes reduce the amount of repeated code.
Consider the following class:
public class Unit {
protected int health;
public Unit(int hp) {
// Prevents health for being set to 0 or less.
if(hp <= 0)
throw new IllegalArgumentException("Health must be more than 0.");
health = hp;
}
public void setHealth(int hp) {
// Prevents health for being set to 0 or less.
// Repeat of the code in the constructor.
if(hp <= 0)
throw new IllegalArgumentException("Health must be more than 0.");
health = hp;
}
}
Instead of doing the check twice across 2 functions to ensure the incoming hp value is correct, it might occur to some coders that we can call the setter within the constructor instead, to reduce the amount of repeated code:
public class Unit {
protected int health;
public Unit(int hp) {
// Prevents health for being set to 0 or less.
if(hp <= 0)
throw new IllegalArgumentException("Health must be more than 0.");
health = hp;
setHealth(hp);
}
public void setHealth(int hp) {
// Prevents health for being set to 0 or less.
// Repeat of the code in the constructor.
if(hp <= 0)
throw new IllegalArgumentException("Health must be more than 0.");
health = hp;
}
}
This, however, is discouraged, because (according to textbooks) setters like setHealth() can be overriden by child classes, creating unexpected or buggy behaviour in these child classes.