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Daily JavaScript Challenge #JS-48: Count Occurrences of Each Word in a String

The challenge is to create a function that counts the occurrences of each word in a given string.
The function should return an object where the keys are the words and the values are the counts.
The article provides a link to the documentation on String.split() for more information.
The readers are encouraged to share their approach and learnings in the comments.

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Dev

409

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The Gap That LeetCode's 30 Days of JavaScript Actually Fills

LeetCode's 30 Days of JavaScript study plan focuses on teaching JavaScript concepts that are essential for real-world software engineering.
It teaches practical patterns rather than just the language basics.
You need to have a reasonable understanding of JavaScript to grasp the concepts taught in this study plan.
It serves to bridge the gap between computer science theory and software engineering.
The challenges in the study plan help create connections between the worlds of computer science and software engineering.
The challenges in this JavaScript study plan build a complete mental model of modern JavaScript, layer by layer.
The sequence of problems isn't random, but rather is building a mental model of modern JavaScript, layer by layer.
This study plan has several blind spots as it assumes a certain level of prior knowledge, some of the challenges can be overwhelming for beginners, but it is still a valuable resource for understanding modern JavaScript.
Counterintuitively, after completing the challenges you will gain the most valuable skill of recognizing the patterns in other people's code.
The real challenge is recognizing how to apply learned patterns in production code.

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Dev

297

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How to clean a Docker environment from unwanted images

Docker is a containerization technology that can quickly create a cluttered environment with unused and unwanted images.
Docker images are the fundamental building blocks of Docker containers, stored in a Docker registry.
Identifying and listing unused Docker images can be performed through various Docker commands.
Use 'docker images' command to list all the Docker images and 'docker image prune' command to identify and list all the unused images.
Removing unwanted Docker images can be done by using 'docker rmi' command to remove a specific image or use 'docker image prune' command to remove dangling or unused images.
'docker image prune' command with '-a' option to remove all unused images from the Docker environment.
Maintaining a clean environment is important for optimal performance and reducing unnecessary resource consumption.

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Dev

311

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Implementing Long Polling in .NET for Real-Time Communication

Long polling is a technique used to achieve real-time communication between a client and a server.
Benefits of long polling include real-time updates, reduced latency, efficiency, and simplicity.
Use cases for long polling include chat applications, live updates, and collaborative tools.
Drawbacks of long polling include connection overhead, resource consumption, and timeouts.

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Medium

440

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STON.fi at LonTON Episode V: A TON Christmas Celebration

LonTON Episode V: A TON Christmas Celebration
Highlights: Festive wrap-up of the year's TON ecosystem, updates from STON.fi CBDO, insights from leading TON projects, Christmas party vibe
Event Details: Date - December 17, Location - Central London, Join the event by following the provided link
Can't make it to London? STON.fi will provide updates, photos, and videos from the event

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Dev

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Why implement custom copy constructor in C++?

In C++, copying is a very distinct operation that varies depending on the object that you deal with.
If your class does not own any resource, consists only of trivially constructable types and does not encapsulate any logic, not implementing any custom constructors or destructor is actually a good practice.
Copying becomes more complicated when your object becomes more complicated too, for instance, with classes holding pointers.
To make a deep copy of the object, you must implement your custom copy constructor where you perform additional memory allocation dedicated for the copied object.
Having std::make_shared only in a constructor allows you to control the dynamic memory allocation.
When you put a non-copyable type inside your class and you don't implement a custom copy constructor, the compiler implicitly deletes the constructor of your class as well.
Whenever you add a copy constructor to your class, you must add a default constructor as well.
Another example is classes which are supposed to persist a cache specific for single class instance.
Adding a custom copy constructor may become a fix for the autogenerated default copy constructor resulting in unexpected output
Consider using std::weak_ptr if you need to implement a caching-like mechanism.

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Dev

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The Go Programming Language: Simplicity and Power for the Modern Developer

Go, also known as Golang, was created by Google in 2007 to combine the simplicity of scripting languages with the performance of compiled languages.
Go's simplicity, backward compatibility, and concurrency features make it appealing for developers and scalable systems.
The job market for Golang developers has grown, with competitive salaries and opportunities in cloud computing, microservices, and distributed systems.
Go's adoption is increasing, with thousands of open-source projects and companies relying on it, and future updates like generics make it even more appealing.

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Dev

155

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Must Have AI for Work/Study 🤖

AI note-takers are game-changers for busy professionals.
They transcribe audio and video content, creating concise summaries.
Benefits include saving time, boosting focus, ensuring accuracy, and staying organized.
Recommended tool: tl;dv, a user-friendly option with robust features.

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9 Likes

Medium

262

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How to Discover and Enhance Your Abilities to Transform the Future

Recognize your natural talents and patterns to discover hidden skills and abilities.
Invest in continuous learning and set specific goals to transform your abilities into achievements.
Align your ambition with your purpose to generate sustainable motivation.
Believe in your own growth and invest in yourself to create an extraordinary future.

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15 Likes

Dev

111

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Secure-by-Design: How AWS, Microsoft, and Others Are Embracing CISA's Cyber Goals

The Cybersecurity and Infrastructure Security Agency's (CISA) secure-by-design pledge has driven substantial cybersecurity enhancements across the software industry.
Major companies like Amazon Web Services (AWS), Fortinet, Microsoft, Okta, and Sophos have embraced the pledge and made notable advancements.
AWS mandates multi-factor authentication (MFA) and offers phishing-resistant authentication through FIDO2 passkeys.
Microsoft has increased MFA enforcement, committed to faster cloud vulnerability patching, and improved customer access to logging data.
The industry agrees that the pledge has elevated security standards and hopes it will attract more developers to contribute to a resilient cybersecurity ecosystem.

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6 Likes

Medium

111

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STON.fi:Farming on STONFI. Exciting Updates Ahead

STON.fi is launching several new farms and adding rewards to existing ones.
New farms include hTON/TON v2, HPO/hTON v2, and extended JETTON/USDt farms.
Farming period for some farms is until December 17, while others have extended periods.
No LP token lock-up is required for some farms and LP tokens are automatically issued upon providing liquidity.

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Medium

360

Guess Your Birthday with Java: A Fun and Interactive Program.

This is a Java program which asks you to identify whether your birthday appears in five different sets of numbers.
Each set represents some specific range of dates so that every possible day of the month appears in a unique combination of these sets.
Each day of the month can be represented in binary form using 5 bits, which organizes the days in such a way that each day can be identified by checking whether it appears in specific sets.
The program displays each set to the user one by one and reads the user’s response to each set (Yes or No).
Based on the answers, the program adds specific values to a variable day that leverages binary logic and sums up these values to determine the exact day.
The logic behind adding the values 1, 2, 4, 8, and 16 corresponds directly to the binary numbering system, which is the foundation of how computers process and store information.
The method of adding 1, 2, 4, 8, and 16 is tied to the binary system, where each set represents a different bit position in the binary number corresponding to your birthday.
After answering questions for all five sets, the program reveals your birthday, which has been calculated using simple arithmetic.
This is not only a fun way to guess your birthday but also a practical demonstration of how binary logic underpins many applications.
The same logic can be found in real-life applications such as decision trees, binary search algorithms, interactive games, etc.

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Medium

226

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Cineflicks: A Cinephile Guide to Immersive Movie Experiences

Cineflicks is a platform that celebrates the art of storytelling through cinema.
It focuses on fostering immersive movie experiences to honor the cinematic art form.
Cineflicks offers a diverse collection of films, including classics and independent gems.
It promotes a sense of community through discussions, events, and exclusive screenings.

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Dev

182

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UI Card Library

Participating in the Frontend Challenge - December Edition, CSS Art: December has been an inspiring journey into the world of CSS art.
A curated collection of beautifully designed UI cards with direct access to their Figma designs. Each card includes creator details with links to their LinkedIn and Twitter profiles. Perfect for inspiration and collaboration!
Embarking on this project allowed me to delve deeper into CSS techniques, such as positioning, transformations, and animations. I learned how to manipulate simple HTML elements to create intricate designs, enhancing both my technical skills and artistic expression.
Looking ahead, I aim to experiment with more complex animations and interactive elements, further blending art with functionality in web design.

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Dev

422

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Help needed! A lightweight CSS framework/library

The author is looking for a lightweight CSS framework/library for small projects or idea validation.
They are seeking a solution that provides styling for tags and basic components.
The author also wants the framework/library to have implementation in Figma for interface solutions.
Customization options, including CSS variables, for different themes are important to the author.

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