How to Control Fan Speed with Temperature using Arduino Uno
Posted: 2022-03-13 14:07:35 Source: https://linuxhint.com/temperature-control-fan-speed-arduino-uno/
The temperature-controlled fans are mostly used in the devices which need adequate cooling at high temperatures and the most common example is the desktop PCs or laptops. This article is a detailed guide on how to control a fan using temperature sensor (LM35) values using Arduino Uno. LCD is also interfaced to display the temperature and speed of the fan.
How to Implement JavaScript Stack Using an Array
Posted: 2022-03-13 07:08:01 Source: https://linuxhint.com/implement-javascript-stack-using-array/
Arrays in JavaScript offer the push() and pop() methods that permit you to implement the JavaScript stack efficiently. After creating an array, you can perform further operations such as adding or removing an element to the stack, checking the topmost element, clearing the whole stack, and verifying the array size.
How to Implement JavaScript Queue Using an Array
Posted: 2022-03-13 06:00:59 Source: https://linuxhint.com/implement-javascript-queue-using-array/
Arrays in JavaScript offer the push() and shift() methods that permit you to implement the JavaScript queue efficiently. After creating an array, you can perform further operations such as adding or removing an element to the queue, checking the front element, clearing the whole queue, and verifying its length.
Different Ways to Check if an Object is Empty in JavaScript
Posted: 2022-03-13 05:21:03 Source: https://linuxhint.com/check-if-object-empty-javascript/
Using Object.keys(), JSON.stringify(), Object.getOwnPropertyNames(), and jQuery.isEmptyObject() are different ways to check if an object is empty in JavaScript. The Object.keys() and Object.getOwnPropertyNames() methods convert the passed object into an array, and its length property verifies the array length, whereas the JSON.stringify() method converts the accepted object into a string and then perform the same operation. Lastly, jQuery.isEmptyObject() directly checks the object without performing any conversion.
Different Ways to Check If a Property Exists in an Object
Posted: 2022-03-13 04:27:40 Source: https://linuxhint.com/check-if-property-exists-in-object/
JavaScript offers different ways to check if a property exists in an object or not, such as Object.hasOwnProperty() method, includes() method, and “in” operator. The Object.hasOwnProperty() and includes() method can be utilized to check the "own" properties of an object. Whereas the “in” operator determines the own properties as well as inherited object properties.
CSS Font-Family Property
Posted: 2022-03-13 04:26:49 Source: https://linuxhint.com/css-font-family-property/
The CSS font-family property is used to specify the family name of the font or text. CSS font-family names are divided into two types: "font family-name” and “generic family-name”, where font-family name is the name of the typeface, and generic font families serve as a fallback option. The CSS font-family property can take a list of font families separated by commas.
CSS Font Style Property | Explained
Posted: 2022-03-13 04:25:46 Source: https://linuxhint.com/css-font-style-property/
CSS font-style property specifies the font style of the text elements. It is used to style text in normal, italic, bold, and oblique formats. By utilizing different CSS font-style properties, we can customize the style of a text and can make it visually appealing. This write-up discussed CSS font-style property with the help of suitable examples.
PySpark – Sort()
Posted: 2022-03-13 04:20:58 Source: https://linuxhint.com/pyspark-sort/
In PySpark, sort() is used to arrange the rows in sorting or ascending order in the DataFrame. It will return the new dataframe by arranging the rows in the existing dataframe. This article will discuss how to use a sort() function using four scenarios on the PySpark dataframe in Python.
Arch Linux Turns 20
Posted: 2022-03-12 16:34:00 Source: https://linux.slashdot.org/story/22/03/12/0251257/arch-linux-turns-20?utm_source=atom1.0mainlinkanon&utm_medium=feed
"Arch Linux, the rolling Linux distribution that powers Valve's Steam Deck is now 20 years old," reports Neowin. Slashdot reader segaboy81 writes that "What's cool to see here is that everything changed behind the scenes, but on the surface, things are the same." From the article: Announced on March 11th, 2002, and codenamed Homer, version 0.1 was released to minor fanfare. The release notes were a far cry from today's, essentially announcing it had broken ground and the foundation was going in, as it were. Homer's release notes: I've finally got a bootable iso image on the ftp site. The bad news is that you don't get a pretty interactive installer. But if you wanted one of those, you would have gone with RedHat, right? ;) I'll try to get the docs up for ABS (Arch Build System) which, IMHO, is one of the best advantages of Arch. With ABS, you can easily create new packages, and it's trivial to rebuild existing packages with your own customizations.... It shipped with Linux kernel 2.4.18 which many of the Linux old-timers (myself included) will remember was right before we started to get nice things like auto-mounting USB drives in kernel 2.6. XFree86 4.2.0 was also in stow, which is what we now call Xorg. If you wanted to build software, you had to use an absolutely ancient gcc toolchain (2.95.3). Web browsing was covered by the ghost of Netscape Navigator, Mozilla 0.9.9. Heady days, these were!
Read more of this story at Slashdot.
PySpark – OrderBy()
Posted: 2022-03-12 14:47:30 Source: https://linuxhint.com/pyspark-orderby/
In PySpark, orderBy() is used to arrange the rows in sorting/ascending order in the DataFrame. It will return the new dataframe by arranging the rows in the existing dataframe. In this article, we will discuss how to use the orderBy() function using four scenarios on the PySpark dataframe in Python.
How to Create a Hello World Program in Rust
Posted: 2022-03-12 13:00:57 Source: https://linuxhint.com/rust-hello-world/
This article provides a guide on how to create a Hello World Program in the Rust programming language. In this tutorial, we highlight creating our first Hello World program and discussing the anatomy of the Hello World program in the Rust programming language, plus the importance of the Rust compiler.
Enum in Java | Explained
Posted: 2022-03-12 12:47:47 Source: https://linuxhint.com/enum-java/
In java, enum is a special class that contains a group of constants and can be used when there is guarantee that the certain values are not going to be changed throughout the program. Enum provide some predefined methods such as values() that returns array of enum constants, ordinal() returns index of enum constants, and many more methods that can be used to perform different functionalities.
Encapsulation in JavaScript | Explained
Posted: 2022-03-12 12:47:29 Source: https://linuxhint.com/javascript-encapsulation/
Using Function scopes and Closures, Encapsulation in JavaScript can be implemented easily. With the help of Encapsulation, you can bind the data or a single unit to the methods that are performing some operations on it. It also permits you to validate and control the data flow in a JavaScript application.This write-up explained Encapsulation in JavaScript with the help of suitable examples.
Drop View If Exists postgres
Posted: 2022-03-12 12:47:09 Source: https://linuxhint.com/drop-views-postgresql-database/
A view can be a glance at a database record from a different site. A view in PostgreSQL is a subset of one or more tables to see the important data. We mostly create views to execute the most-used query in the database. How to create, use and drop the views in the PostgreSQL database is discussed in this article.
How to delete a WordPress site
Posted: 2022-03-12 12:46:48 Source: https://linuxhint.com/delete-wordpress-site/
Removing a WordPress site is extremely easy. You can also backup your site manually by downloading the database and the zipped files. Always remember that deleting only your site files isn't considered removing your entire site; you need to delete the database. How to delete a WordPress site is discussed in this article.
How do I unpublish a WordPress site?
Posted: 2022-03-12 12:46:32 Source: https://linuxhint.com/unpublish-wordpress-site/
Unpublishing a WordPress site, pages or posts is pretty easy. You can choose to hide your content to all visitors or to password protect it for certain users. There are many plugins in the market to unpublish your site. How to unpublish a WordPress site is discussed in this article.
How do I Paginate in WordPress?
Posted: 2022-03-12 12:46:10 Source: https://linuxhint.com/paginate-wordpress/
Paginating means dividing your content into different pages. The market offers additional plugin alternatives you can find in the keyword search field of the plugin installation screen; feel free to try any of them. Proper pagination can improve users' experience when visiting your website. How to Paginate in WordPress is discussed in this article.
How do I create a WordPress table without plugins?
Posted: 2022-03-12 12:45:54 Source: https://linuxhint.com/create-wordpress-table-without-plugins/
Tables are part of WordPress built-in features. Creating them is pretty easy as it only requires a few steps. Abusing plugins isn't a good idea since it may decrease your site performance, as less plugins are better for your web traffic. How to create a WordPress table without plugins is discussed in this article.
How do I change the size of text in WordPress?
Posted: 2022-03-12 12:45:30 Source: https://linuxhint.com/change-text-size-wordpress/
Resizing the text in WordPress is pretty easy. It is important to distinguish between headings and text when resizing since it will directly impact on your website traffic. SEO experts recommend using Hx tags professionally, making it easy for search engines to classify your site. This article discusses how to change the size of text in WordPress.
How do I add a background image to WordPress?
Posted: 2022-03-12 12:45:13 Source: https://linuxhint.com/add-background-image-wordpress/
It is highly recommended to have the image optimized previous to uploading it to your site. You can easily add a background image to your site and change or update an existing one. This article discusses how to add a background image to WordPress sites.