Here's a little array method mystery for you...
Here's a beginner trap: map returns a NEW array with transformed values. But forEach? It returns undefined – it just loops through items. Remember: map transforms, forEach just iterates.
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Learn to code for free....

Why it's important to take ownership of your work - the way Dr. David J Malan sees it

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Music Production 101 – Master Sound Design, Mixing, and Mastering in FL Studio

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Here's a little array method mystery for you...

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The advantages of being bilingual in tech

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The RACECAR challenge - Ready: GO!

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So why should you still learn C programming in 2025 and beyond? Dr. David J. Malan has an answer.

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Browsers fight over who renders HTML the best. Which one do you think usually wins?

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All you need to start learning to code with freeCodeCamp is the will to do so.

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Did you know that HTML doesn't care about mistakes?

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What's CS50's 72-hour Regret Clause? Dr. David J. Malan explains here.

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Candy cane conditional: everyone gets a candy cane only once the tree is decorated...

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Which elf gets the candy cane?

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Build a Support Agent with Vercel AI SDK – Full Tutorial

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Take ownership. Advocate for yourself. Get to know the support team.

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How to remove trailing characters from a Python string using the .rstrip() method

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How to get promoted as a dev w/out becoming a manager – Staff Engineer Santosh Yadav [Podcast #202]

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What happens when you spread a string in JavaScript?

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This looks simple, but can you predict the output?

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How to check if a string only contains whitespace in Python

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Unity 2D Pixel Art Game Tutorial

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Don't chase a path that looks good just because you feel like you're supposed to

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How to use the .append() method in Python

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Intro to Supabase – Full Tutorial for Beginners

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Event loop race: which one logs first?

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How to use the .title() method in Python

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Array vs object gotcha in JavaScript

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It's both really hard and really easy to make money. How can this be?

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The "AI is going to replace devs" hype is over – 22-year dev veteran Jason Lengstorf [Podcast #201]

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How to use the .swapcase() method in Python

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Code 7 Landmark NLP Papers in PyTorch (Full NMT Course)

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How to split a string in Python

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So how do closures work again...?

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Build Serverless AI Agents with Langbase

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The life of a software developer after work hours

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Type coercion in JavaScript can get a little wild...

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How to negotiate your salary like a pro using anchoring

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How to build your own learning path using Open Source with Kunal Kushwaha [Podcast #200]

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Learning to code on the job - right in the browser

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Become an AI Researcher Course – LLM, Math, PyTorch, Neural Networks, Transformers

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NestJS Course for Beginners - Build Server-Side Applications

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Some upcoming features for freeCodeCamp - Tom talks about daily coding challenges, streaks, & more.

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Classic JavaScript gotcha: why does this print 3, 3, 3 instead of 0, 1, 2?

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Advice from a serial career changer with GitHub's Andrea Griffiths [Podcast #199]

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Code a turkey timer!

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Do something toward learning programming every day - even if it's just 10 minutes

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CSS Flexbox Tutorial for Beginners

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Can you guess what this code logs?

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Remember floppy disks?

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When NOT to use AI in your hackathon project with MLH winners Cindy Cui and Alison Co [Podcast #198]

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Learn programming fundamentals first. Then you can use AI to help you become more efficient.

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Do you know who the first computer programmer was?

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From laser-etching microchips to rediscovering a love of coding

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Create a Cute Room Portfolio with Blender, Three.js, JavaScript – Beginner Course

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JavaScript Clean Code Course – Fix Code Smells & Refactor

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Intro to Backend Web Development – Node.js & Express Tutorial for Beginners

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How to get back into coding after years away

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Boost your app's performance with CSS containment

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Harvard CS50 prof David J. Malan on why you should learn programming slowly [Podcast #197]

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Don't settle for boring text underlines...make them more fun!

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Discrete Mathematics Course for Beginners

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n8n Workflow Automation Tutorial – Create an Interview Scheduler & More Step-by-Step

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Learn Vue.js – Tutorial for Beginners

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How Ania built a course that teaches devs to code their own AI agents

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Cryptography for Beginners - Full Python Course (SHA-256, AES, RSA, Passwords)

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Creative Web Development with Three.js and Blender – 3D Portfolio for Beginners

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Perfect image cropping every time...

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