Coding & Skills
123 articles in this topic
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.
Lambda Expressions in C++: Syntax, Captures and Worked Examples
Learn how C++ lambdas store captured state, accept parameters and work with STL algorithms. Follow each example from creation to exact output.
Perceptron and Activation Functions MCQs: 11 Solved Questions
Work through 11 practice problems covering perceptron sums and outputs, sign and sigmoid activation, separating lines, linear separability, and ANN weights.
Header Files and Linking in C: Build a Multi-File Program Step by Step
Build and debug a three-file C program while learning where declarations, definitions, external symbols, and storage belong.
React Tutorial: The Complete Learning Path from JSX to Your First Full App
Learn React in the right order, from the JavaScript prerequisites to components, hooks, routing, Redux, deployed projects, and the full-stack step.
this Keyword in JavaScript: call, apply, bind and Arrow Functions with Interview Traps
Determine this from the call site, compare explicit binding methods, and see why arrows behave differently in callbacks and object methods.
Python Functions and Modules: Complete Guide with Worked Examples
Build a reliable mental model for Python functions, scope, imports, and packages, then trace a two-module score report from call to printed result.
Basic Blocks, Flow Graphs and DAG Construction for GATE: Code Optimization Numericals
Partition three-address code by the leader rules, draw its control-flow graph, and construct a basic-block DAG without losing shared expressions or edges.
Inheritance MCQs: 12 Solved Questions on Code Reuse and Class Hierarchies
Solve 12 inheritance MCQs, then use clear explanations to separate hierarchy shape, access rules, assignment compatibility, constructor order and method lookup.