CodeChef’s Post

Why do we not yet have an tool that can automatically port between different programming languages and tech stacks using machine learning. I feel like we’ve really missed the boat as an industry with regard to software re-use. You use Python/DJango, I use Java/SpringBoot, someone else is using Javascript/Express but we’re all doing exactly the same thing. How many functionally identical web server implementations does the world need? We should all be able to collaborate on the same project reading and writing code in a language we’re familiar with regardless of the language it was originally written in. Loops are loops, conditionals are conditionals. We should stopping treating languages like fashion,abstract away the fluff, and distill out the core aspects of writing software: logic and information. </rant>

Writing an Online Judge - Part 2(b) of 4: Judging Code (Linkedin cut my last post short lol) Anyways, now that the judge has access to the user input, it's time to evaluate. For this, I wrote a C++ program which output a Json object as the result (easier to deal with, with my Nodejs API). I could write this in any language but C++ is fast and often times in competitive programming, the test cases are huge which can slow down slower languages like Python. When it runs, it reads input from either a live pipe from the program or a text file. Then, it performs a line-by-line comparison and outputs meaningful messages. This part will of course, will get better as I move back to it when I am done writing this whole judging process as a Go microservice (part 4 spoilers) Plus, with a few modifications, I can allow problem setters to write custom checkers for problems since not all problems can have a line by line comparison checker as there are problems with multiple possible correct solutions too. Floating point checker is also on my list of things to-do. Anyways, here's some random code snippet from the thing I just talked about. It eventually outputs a Json object on stdout

Nearly All Binary Searches are Broken… According to Jon Bentley’s ‘Programming Pearls’, only 10% of coders can write Binary Search correctly. Are you one of them ? Below is a standard binary search in Java(Java.util.Arrays) which had a bug and escaped detection for around 10 years. So What’s the bug in below code ? 1: public static int binarySearch(int[] a, int key) { 2:     int low = 0; 3:     int high = a.length - 1; 4: 5:     while (low <= high) { 6:       int mid = (low + high) / 2; 7:       int midVal = a[mid]; 8: 9:       if (midVal < key) 10:         low = mid + 1 11:       else if (midVal > key) 12:         high = mid - 1; 13:       else 14:         return mid; // key found 15:     } 16:     return -(low + 1); // key not found. 17:   } The bug is in Line 6: int mid = (low + high) / 2; if the sum of low and high is greater than the maximum positive int value (2^31 - 1), the sum overflows to a negative value and the value stays negative when divided by 2. This throws ArrayIndexOutOfBoundsException In Java. In C/C++ this causes array index out of bounds. So What’s the best way to fix the bug ? Line 6: int mid = low + ((high - low) / 2);  or a faster way is, int mid = (low + high) >>> 1; In C/C++ you can do this, mid = ((unsigned int)low + (unsigned int)high)) >> 1; And now the Binary Search is bug free, Right ? 😊 Well We don’t know until we test it for all possible input values which is seldom feasible. With concurrent programming, it’s even worse because you need to test for all internal states which is practically impossible. Key Takeaway: It is hard to write even the smallest piece of code correctly, and our whole world runs on big, complex pieces of code. !! #KeepCoding #KeepLearning #KeepGrowing

The Curious Cases of Programming Language Names ☕️ Have you ever stopped to wonder how programming languages got their names? Here's a fun fact peek behind the origins of some popular ones: Java: Originally named "Oak" (inspired by a tree near the creator's office!), it later transformed into the energizing "Java" - a tribute to the programmer's beloved cup of joe. Python: This language's name pays homage to Monty Python's Flying Circus, a British comedy group. The creator, Guido van Rossum, found the name "Python" to be short, unique, and much like the show itself - a bit mysterious! JavaScript: Don't be fooled by the name! Despite its resemblance, JavaScript has no relation to Java. Originally called "Mocha" and then "LiveScript," it ultimately adopted "JavaScript" for marketing purposes, leveraging Java's popularity while highlighting its web scripting capabilities. Ruby: Inspired by gemstones (similar to another language, Perl), Ruby's creator sought a concise, fun, and easy-to-pronounce name. Since Ruby follows Perl's birthstone (pearl) in the calendar year, it became a perfect fit! Rust: This name goes beyond the literal. The creators chose "Rust" to symbolize the language's core principle: robust and reliable systems programming, built to compete fearlessly in the long run. Much like the complex and resilient structure of the Rust fungus, the language aspires for similar strength. So next time you code in these languages, remember the interesting stories behind their names! #programming #programminglanguages #funfacts #devlife #java

🔍 Exploring Code Casings: Snake Case 🐍 vs. Camel Case 🐫 vs. Pascal Case 🐪 vs. Kebab Case 🥙 Code conventions matter! 📝 When it comes to naming variables, functions, or identifiers, choosing the right casing style can enhance readability and maintain consistency across your codebase. Let's dive into the differences between these four popular casings: 1️⃣ Snake Case 🐍: Words are separated by underscores (_), like_this_example. It's commonly used in Python and is great for readability in long variable names. 2️⃣ Camel Case 🐫: Words start with lowercase and each subsequent word starts with an uppercase letter, like thisExample. Often used in Java and JavaScript, it's easy on the eyes and popular for method names. 3️⃣ Pascal Case 🐪: Similar to Camel Case, but the first letter is also uppercase, like ThisExample. Common in class names and is prevalent in languages like C#. 4️⃣ Kebab Case 🥙: Words are separated by hyphens (-), like-this-example. Frequently used in URLs and CSS classes, it's readable and web-friendly. Each casing style has its own advantages, so pick the one that suits your project and team's preferences. Consistency within your codebase is key for collaboration and maintenance. 🤝 What's your favorite casing style? Share your thoughts in the comments below! Let's keep the code clean and easy to understand. 💻🚀 #CodeConventions #CodingBestPractices #CodeReadability

Shubham Londhe, Ashfaque Ahmed Shaikh, Eugenio Miguel Mendoza, Azeez Salu, My Blog link: https://lnkd.in/g-89Vqvb Hiii to all....Today i did one most interesting project of creating real-time dynamic Calculator Fullfledged Application through Python GUI, i observed Most of the people won't give ready-made source code for this type of web/app Dev's. To avoid wastage of ur time, iam giving full code in my blog link, otherwise u have to type each line by watching 1 hour video step by step... for understanding you should see video, but in practice u can copy & paste full code, once logic knows, no need of waste of time to write.... Here i felt python also having so much of lines like html+css, react.Js better, there we can create duplicate components if similar block of code.

Have come a long way…with limitations because of my free plan backend but yes it now auto edit jump cut videos from a website. Languages: HTML, JavaScript, python Main Dependencies: Moviepy, Celery, Flask How it works in a nutshell: Python code with moviepy can remove silence from videos. Said code is wrapped in flask for frontend easy deployment, backend uses celery to asynchronous tasks completion with status update every 2 seconds in JavaScript embedded in html. Once status changed to complete, create download button in html for user to download edited video. The multiple download buttons is a bug.. might just leave it for fun

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Is there a difference between a Parameter and an Argument? Most times, we tend to use those words interchangeably BUT are they different or the same? In almost every Programming language, we do create Functions and every programming language have their respective Syntax for defining a function and calling that function. For the sake of understanding, I will use Python as the Programming language to explain Parameters and Arguments. Whichever Programming Language you use can also follow the same principle because a function can either accept values or not. Lets take for instance; I want to define a Function that will take in two data and return the addition of the two data, this is how we go about it; Step 1: DEFINING THE FUNCTION def addition(a:int, b:int): result = a + b return result Step 2: CALLING THE FUNCTION answer = addition(4, 9) print(answer) NOTE: In Step 1; a and b are the Parameters In step 2; 4 and 9 are the Arguments The rule is; Data plugged into a function at the time the function is being called are ARGUMENTS Data plugged into a function at the time the function is being defined are called PARAMETERS. This brings us back to the Million Dollar Question; ARE PARAMETERS AND ARGUMENTS THE SAME? The Multi Trillion Dollar answer is NO; Parameters are different from Arguments. #software #javascript #javascriptdeveloper #javascriptdevelopers #javascriptlearning #javascripts #javascriptprogramming #javascriptdevelopment #softwaredevelopment #softwaredeveloper #softwareengineer #django #djangodeveloper #djangorestframework #djangoframework #pythonprogramming #python #pythondevelopment #csharp #csharpprogramming #csharpdotnet #dotnet #dotnetcore #dotnetfullstackdeveloper #dotnetdeveloper