Coding & Skills
369 articles in this topic
Python Control Flow and Loops: if, for, while and Worked Traces
Learn to trace Python branches and loops without skipping a state change. Worked examples cover GCD, break and continue, loop else, nested loops, and common mistakes.
Updated 6 Oct 20265 min readPython
ctype.h Functions in C: Classify Characters and Convert Case Safely
Learn which character test to choose, trace a complete C classifier, and avoid signed-char and EOF mistakes. Worked examples separate classification from case conversion.
Updated 5 Oct 20266 min readC
Queue Data Structure: Operations, Circular Queues and Worked Examples for GATE
Learn queue operations through a five-slot circular queue trace, then connect the same FIFO rule to linked lists, BFS and the two-stack implementation.
Updated 4 Oct 20266 min read75 viewsDSA & Algorithms
TypeScript vs C# Typing: Structural Compatibility, Nominal Identity, Generics and Runtime Checks
Follow one User/Admin example through TypeScript and C# to predict assignments, generic conversions, branded IDs, and JSON behaviour at runtime.
Updated 3 Oct 20266 min readProgramming Languages Survey
C++ unordered_map and unordered_set: Hashing, Equality and a Custom-Key Frequency Counter
Build a correct mental model for C++ unordered containers, then trace a custom-key counter through a real collision without merging distinct keys.
Updated 2 Oct 20266 min readC++
A* Search Algorithm: Step-by-Step Worked Example, Heuristics and Exam Traps
Learn A* from first principles, follow every relaxation on a weighted graph, and test optimality, tie-breaking, parent updates and heuristic quality.
Updated 2 Oct 20266 min readML & Data Science
JavaScript Operators: Types, Precedence and Runnable Examples
Learn how JavaScript arithmetic, assignment, comparison, logical and modern operators behave by tracing one score program from inputs to final output.
Updated 2 Oct 20266 min readWeb Development
Wrapper Classes and Autoboxing in Java: Worked Examples and Null Traps
Learn why Java wrapper classes exist, how boxing and unboxing work, and where nulls, reference identity, and overload selection create surprises.
Updated 1 Oct 20265 min readJava
Python for GATE: CS vs DA Syllabus, Past-Paper Evidence and a 10-Week Plan
Choose the right Python preparation path for GATE CS or DA, then use two worked traces and three diagnostic gates to test your progress.
Updated 1 Oct 20264 min readPython
Key Features of the C Programming Language: Code Examples
What do C's features actually do in a program? Follow an even-number sum and a pointer update, then test your understanding with small code changes.
Updated 30 Sep 20266 min readC
Linked List Data Structure: Complete Guide with Pointer Traces and Worked Examples
Learn how linked lists work by tracing every pointer change in core operations, then apply the same invariants to reversal, middle-node search, and cycle detection.
Updated 29 Sep 20266 min readDSA & Algorithms
TypeScript Learning Roadmap: 20 Weeks from Everyday Types to a Full-Stack App
Follow a dependency-led TypeScript plan through BudgetLens, IssueBoard and TaskBoard, with exact weekly gates, strict checks and tested API boundaries.
Updated 28 Sep 20265 min readProgramming Languages Survey