Language Selection

English French German Italian Portuguese Spanish

Programming Leftovers

Filed under
Development
  • p6steve: raku at Monterey Docks (part II)
  • Convert a String to JSON Python

    In Python, strings are a series of elements or items. The strings are unchangeable objects. We cannot change the string after their declaration. “JavaScript Object Notation” is the full form of JSON. In Python, the ‘JSON files contain information that is readable for humans. The elements appear in the form of pairs.

    In web APIs, the information we send and receive is usually in the form of a dictionary string. To utilize this information, we extract consequential data. For this, we have to convert this information to dictionary format for more operations. JSON provides several techniques for serializing and deserializing “JSON”. The process of changing the string to “JSON” is called serializing. And the process of converting the JSON to a string is known as deserializing. Serialization is the opposite of deserialization. Several methods are used to convert strings to JSON.

  • How Do You Repeat a String n Times in Python?

    In Python, we utilize the asterisk operator to repeat a string. This operator is indicated by a “*” sign. This operator iterates the string n (number) of times. The “n” is an integer value. After repetition, a new string is created. The operation requires two arguments: a string and an integer value. We multiplied the string by a specific number for the repetition of string n times. Repeating the string merges the copy into an identical string. The asterisk operator repeats the string up to a definite length.

  • How Do I Check If a String Is Empty in Python?

    The strings are unchangeable. We cannot modify the string after defining it. Different operations are performed on strings. If we have a string that contains only whitespaces in it, that string is not considered empty. It contains the size of the non-zero value. So, if len() method and “not” operator is applied on this type of string, it considers whitespace as an element of the string. Sometimes in Python, we want to check whether the specified string is blank or not. To check the emptiness of the given string, use the “not” operator to utilize the variable of string instead of a condition, or utilize the equal operator to match an empty string. Now, we are going to explain numerous methods...

  • Static Method C++

    A method in C++ is also known as a function, and using methods in C++ promotes the concept of modular programming and code reusability. It means the methods that are once written can be called repetitively for as many times as needed without having the necessity of writing them every time.

  • C++ Unsigned Integers

    The integer data type in C++ is further divided into many sub-types. One such sub-type is the unsigned integers. The unsigned integers are capable of storing only the positive whole numbers. The unsigned integers in C++ are preferred while manipulating bits in operating systems since you have limited storage space. Moreover, they can also be used for array indexing since the index of an array can never be negative. This article is devoted to the discussion of the unsigned integers in C++ in Ubuntu 20.04.

  • C++ Getline function

    Getline() is used to get the input string from the user in one or more lines until a special character comes (delimiter). It is a predefined function and uses a library in the program, as its definition is present inside the library’s header file.

  • C++ Pointer Arithmetic

    Within mathematics, we have always used the term raise to the power for calculating a number having some power exponent on it. This can be said as (base number) raise to the power (exponent). How an exponent can be used for raising a number to a certain power in C++ is discussed in this article.

  • Exponents in C++ to Raise a Number in Power

    Within mathematics, we have always used the term raise to the power for calculating a number having some power exponent on it. This can be said as (base number) raise to the power (exponent). So, within today’s article, we will see how an exponent can be used for raising a number to a certain power in C++. Make sure to have a G++ compiler already installed and configured on your Linux operating system. Let’s start implementing today’s article by opening the shell terminal using the shortcut “Ctrl+Alt+T”. As the terminal is opened now, we can start implementing our examples.

  • Bit masking in C++

    Bit masking is a process that is used to access a specific bit in the bytes of data. This phenomenon is used when you are performing the process of iteration. A bitmask is said to be a mask of a sequence of N –bits that are used to encode a part of our collection.

    These elements of the mask can be set or cannot be. There are bitwise operators to create or toggle the bits. These operators are used to turn on the off bit or vice-versa.
    To use the C++ programs in executing them on Linux, you need to have the Ubuntu file configured and in running state. Moreover, the user must have some knowledge of the C++ language. C++ source codes are written in the text editor. Whereas for the execution process, use the Ubuntu terminal.

    A bitmask is also said to be a simple mask that is a sequence of n bits. It encodes the subset of the collection. The element ‘I’ is present in the subset of the ‘ith’ bit is set in the mask. For the set of elements having nth bytes, there are chances of having a 2N mask corresponding to a subset.

  • Deep Copy C++

    The copy means the same to the same replica of an original object. Within programming, there are different methods to create copies of objects. The copy of objects, variables can be done with a copy constructor or using the default assignment operator “=”. Two types of copies can be made within the C++ code, i.e., shallow and deep copy. You can use one to copy any variable or object in the code. When our object has variables that are dynamically allocated throughout the program, we need to create a Deep copy of such type of object. This article will see how a Deep copy can be created in C++.

  • An Introduction to MATLAB: Structure and Application

    Programming is the core of a modern computer. You can not even think of an alive computer without programming. There are several languages to do computer programming, and each of them has its special field. Some are known for scientific computation, and some are specialized for making the building blocks of an operating system. MATLAB is also a very popular programming language. Today we are going to get an absolute introduction to MATLAB and its wide application in today’s world.

    Although there is a wide variety of programming languages available there in the virtual world, we have chosen MATLAB for several important reasons. It is a compact language for heavy-duty works. We are going to discover each and every detail of MATLAB in this journey. Stay with us to learn. The more you know, the more you grow.

GCC and Loongson

  • Loongson Posts Patch Series For Bringing Up LoongArch In GCC Compiler - Phoronix

    China's Loongson continues bringing up LoongArch processor support for Linux with this MIPS64-based ISA now seeing the complete patch series for review to enable the GNU Compiler Collection (GCC).

    For months Loongson has been working on LoongArch support for the Linux kernel to varying extents from the new CPU ISA functionality to copying a lot of existing MIPS64 code and adding in new IDs. That Linux kernel support is still in the works.

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

More in Tux Machines

6 Reasons to Pick Linux Over Windows

Almost all students do their work on laptops and PCs that run on Windows. Of course, some of you are lucky enough to afford something that runs on Apple’s macOS. While Windows is a popular OS, it’s far from being perfect. Few students are even aware that their PCs and laptops can run on various operating systems.

One of the alternatives students often overlook is Linux. Many believe that this OS is hard to manage. That’s why they prefer to either buy or, in some cases, pirate Microsoft’s creation unless it comes pre-installed on the device, of course.

It’s true that Linux is harder to install than its counterpart. But it has a lot more to offer than meets the eye. So, what exactly sets it apart?

Read more

today's leftovers

  • Planet Incinerating Technology | LINUX Unplugged 441

    We make some last-minute changes to our server setup and catch up on a bunch of thought-provoking feedback. Special Guests: Martin Wimpress and Neal Gompa.

  • GNU World Order 443
  • LibreSSL update

    Undeadly reached out to Theo asking whether he would share with readers an explanation of the changes. He kindly responded: [...]

  • Early Days at Bell Labs

    It's Brian Kernighan discussing the formation of Unix, starting from the back story of the creation of Bell Labs, including predecessors CTSS and Multics, and C predecessors BCPL which was modified to become B, and why Dennis Richie added types to B to make C.

    This video really hits its stride when Kernighan discusses piping and redirection, and the ease of creating wonderful things out of small parts that, and Kernighan used these words, "do one thing and do it well."

What Distribution and Version Pulled You into Linux?

I recently watched a video posted by my good friend (and former Linux Journal colleague) Shawn Powers introducing viewers to Linux and Linux distributions. And it got me thinking about my own personal experience and when I first started to dabble in the world of open source operating systems.

Read
more

The best Linux distributions for 2022

The year 2022 is upon us! That means it’s time to choose a new Linux distribution. Here’s a list of the best Linux distributions for 2022 that will help you not get lost in the variety of versions of your favorite operating system. Read more