Coding & Skills
203 articles in this topic
JavaScript Array Methods: map, filter, reduce and the Interview Problems They Solve
Work through a filter-map-reduce chain and a frequency-table accumulator, then separate non-mutating array methods from the methods that change their input.
Numbers and Arithmetic in Python: Operators, Precision, and Worked Examples
Understand how Python evaluates numeric expressions, from result types and precedence to negative floor division and floating-point comparison. Runnable examples culminate in one complete practice-session calculation.
Linked List Questions for GATE: Pointer-Manipulation Patterns Solved Step by Step
Trace prev, curr and next through a complete reversal, then reuse the same discipline for middle-finding, cycle detection and safe deletion.
PHP Tutorial for Beginners: Build a Form-to-Database Request Flow
Follow Asha's registration from an HTML form through PHP validation and a safe MySQL insert, then display the saved row after a redirect.
C++ auto and decltype: Trace Every Deduced Type
Trace what C++ actually deduces when auto, references, const, decltype, and decltype(auto) interact, then confirm each result at compile time.
Means–Ends Analysis in AI: Subgoals, a 3-Disk Worked Example and Exam Traps
Learn the exact Means–Ends Analysis operator cycle, follow all seven moves of a 3-disk Tower of Hanoi solution, and avoid common reasoning traps.
C++ Setup Tutorial: Install a Compiler and Run Your First Program
Set up a C++ compiler, turn main.cpp into an executable, and learn to diagnose the stage that failed. Two small programs make every command and value concrete.
Node.js Tutorial: The Complete Learning Path from Zero to Job-Ready
Stop collecting disconnected Node.js videos. Follow seven ordered stages, prove each one with a small build, and finish with a capstone you can discuss in interviews.
var vs let vs const in JavaScript: Scope, Hoisting and the Temporal Dead Zone
Trace block scope, early reads, loop callbacks, and const object mutation using the rules behind common JavaScript output questions.
Python Introduction and Setup Tutorial: Install, Verify, and Run Your First Programs
Set up Python with confidence by checking the command, isolating a project in .venv, and running a saved program whose output you can verify step by step.
Left Recursion Elimination and Left Factoring for GATE: Grammar Transformation Drills
Transform immediate and indirect left recursion without losing epsilon, then left-factor a dangling-else grammar. Each change is traced and counted.
Object-Oriented Programming: Classes, Objects and Inheritance with a Worked Java Example
Trace two Java objects from construction to output, and see how independent state, inheritance and runtime method dispatch work together.