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Programming Leftovers

Posted by Roy Schestowitz on Aug 26, 2022

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Dirk Eddelbuettel: RApiSerialize 0.1.2 on CRAN: Small Bugfix

=> ↺ Dirk Eddelbuettel: RApiSerialize 0.1.2 on CRAN: Small Bugfix

A new bug fix release 0.1.2 of RApiSerialize got onto CRAN earlier. It follows on the 0.1.1 release from earlier this month, and addresses a minor build issue where an error message, only in the case of missing long vector support, tried to use an i18n macro that is not supplied by the build.

How to Upload Code to Arduino – 3 Different Methods

=> ↺ How to Upload Code to Arduino – 3 Different Methods

Arduino is one of the best learning platforms for beginners, students and tech related people. Every time you write a new code in Arduino you get a chance to learn something new. After learning how to code Arduino and compiling to find the errors, it’s time to upload the code. Uploading code to Arduino can be difficult for many new learners. Well, I will cover some ways to upload code in Arduino. Let’s begin:

ESP32 Looks Good In Red - News - SparkFun Electronics

=> ↺ ESP32 Looks Good In Red - News - SparkFun Electronics

Hello everyone, and welcome back to another Friday Product Post here at SparkFun Electronics! This week, we have two brand new IoT boards for you to check out, the first of which is our new USB-C version of our ESP32-WROOM Thing Plus. As the name implies, this board replaces the micro USB port on the board with a USB-C, it adds a microSD card slot, and it adds two new voltage regulators for better power use! Following that, we have a new Arduino R3 footprint IoT RedBoard equipped with an ESP32-WROOM as well! A lot of the features that are on the new Thing Plus this week. So, if an R3 version is more your style, you have options. Teensy is up next with 4.1 versions of the popular development board, just without Ethernet. This is a simple change due to supply constraints, but you'll be able to pick up these new versions of the Teensy 4.1 with or without headers. Finally, we wrap the week with a new miniature through-hole speaker. Now, let's jump in and take a closer look at all of this week's new products!

How to use OR Statement in Java

=> ↺ How to use OR Statement in Java

In Java, Operators are unique symbols with a pre-defined purpose. They are utilized to perform a specific operation with one or more operands and then return an output. There are many Java operators, such as Arithmetic, Logical, and Bitwise operators. More specifically, the “OR” operator belongs to the category of logical operators. This boolean operator returns “true” if either or both operand’s values are “true”; otherwise, it returns “false”.

How to Sort 2d Array in Java

=> ↺ How to Sort 2d Array in Java

A two-dimensional or 2D array is a collection of columns and rows. Programmers can randomly access the 2D array elements or each cell individually by utilizing their indexes. With the help of sorting, array elements are arranged according to the requirements, whether in ascending or descending order. More specifically, the Java “Array.sort()” can be utilized for the elements of a 2D array within a program.

What Does Double Colon (::) Mean in Java

=> ↺ What Does Double Colon (::) Mean in Java

In Java, many operators are used to perform different types of tasks, one of them is a “::” (double colon) called “Method Reference” operator. This operator is a replacement of Lambda Expression and is used to refer to the method, whether it is a static method, constructor, or an instance method.

How to Convert double to String in Java

=> ↺ How to Convert double to String in Java

In Java, “double” is an object of the Java “Double” wrapper class which stores the primitive data type double as a parameter. However, sometimes, we need to convert double to String because Strings allow us to store larger numbers that do not fit in any data types that hold the numbers, such as integers or doubles.

How to Convert Integer to Int in Java

=> ↺ How to Convert Integer to Int in Java

The terms “int” and “Integer” are used in Java to store the integer type data. The Integer is a wrapper class for creating integer objects defined by java.lang package, while int is a primitive data type that holds a primitive integer value. It saves 32-bit signed two’s complement integers, whereas the Integer object stores its int value in 128 bits. However, there exist chances that you may need the conversion of an Integer object to a primitive data type int.

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