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KnowledgeGate
knowledgegate.ai > blog > c-lambda-expressions-captures-closures-and-practical-pattern

C++ Lambdas: Captures, Closures and Sort Comparators

1+ day, 2+ hour ago   (853+ words) Learn to read C++ lambdas, trace copied and referenced state, write a valid sort comparator, and prevent dangling-reference bugs in stored callbacks. Exam prep & CS education For a first pass through syntax, value-versus-reference capture, and broad STL use, start with…...

KnowledgeGate
knowledgegate.ai > blog > double-pointers-in-c-tutorial-with-examples

Double Pointers in C: Memory Model and Worked Examples

1+ day, 2+ hour ago   (317+ words) Exam prep & CS education Here, value stores 24, p stores the address of value, and pp stores the address of p. Use the state before the assignment to 81 and track one pointer level at a time. Meaning or value before mutation This…...

KnowledgeGate
knowledgegate.ai > blog > c-function-overloading-and-default-arguments-resolution-rule

C++ Function Overloading: Resolve 5 Calls and Defaults

4+ day, 4+ hour ago   (881+ words) Learn why default arguments affect viability but not ranking, then resolve five score calls using exact matches, promotions and conversions. Includes ambiguity repairs and call-time default evaluation. Exam prep & CS education Function overloading means declaring multiple visible functions with the…...

KnowledgeGate
knowledgegate.ai > blog > pointer-arithmetic-in-c-tutorial-with-examples

Pointer Arithmetic in C: Rules and Worked Examples

4+ day, 4+ hour ago   (634+ words) Understand how C pointers move across arrays, where arithmetic is valid, and why one-past pointers are useful but never readable. Includes code, traces, and common traps. Exam prep & CS education The useful operations are p + n, p - n, p++, p--, p…...

KnowledgeGate
knowledgegate.ai > blog > dfa-basics-definitions-explained

DFA Basics and Definitions

6+ day, 17+ hour ago   (957+ words) Understand what makes a finite automaton deterministic and complete. Build one DFA for strings ending in 01, trace inputs, test acceptance, and repair a missing transition. Exam prep & CS education Use CS Fundamentals for Exams & Placements as the broader subject hub…...

KnowledgeGate
knowledgegate.ai > blog > c-const-constexpr-and-consteval-compile-time-guarantees

C++ const vs constexpr vs consteval: One Worked Program

1+ week, 1+ day ago   (665+ words) See exactly what each C++ keyword guarantees. One C++20 program separates immutability, optional constant evaluation and mandatory constant evaluation. Exam prep & CS education Start with an ordinary function and a const object: Do not turn that into the rule "const…...

KnowledgeGate
knowledgegate.ai > blog > strings-in-javascript-tutorial-with-examples

JavaScript Strings Tutorial: Methods & Template Literals

1+ week, 5+ day ago   (633+ words) Exam prep & CS education You can declare variables, but JavaScript strings may still surprise you. Quote styles look interchangeable, indexes invite off-by-one mistakes, methods seem to ignore your changes, and adding a number may produce text. Reliable string code depends…...

KnowledgeGate
knowledgegate.ai > blog > functions-in-python

Functions in Python: Traced Calls, Return Values and Scope

1+ week, 5+ day ago   (790+ words) Build, call and debug Python functions through traced examples. Learn how arguments, local scope and return values work, then test yourself with short exercises. Exam prep & CS education You can run short Python statements, but copying a calculation for each…...

KnowledgeGate
knowledgegate.ai > blog > strings-mcqs-solved-questions-with-explanations

Python String MCQs: 12 Solved Questions with Answers

1+ week, 5+ day ago   (557+ words) Solve 12 published Python string questions step by step. Trace indices, slices, return types and method contracts before checking each answer. Exam prep & CS education Keep this rule sheet beside you while solving: Excludes stop; an omitted bound follows the direction…...

KnowledgeGate
knowledgegate.ai > blog > prototypes-and-inheritance-in-javascript-tutorial

JavaScript Prototypes and Inheritance: Runnable Examples

1+ week, 6+ day ago   (571+ words) Understand how JavaScript finds inherited properties, shares methods, and implements constructor and class inheritance. Trace the chains, fix common mistakes, and test yourself. Exam prep & CS education JavaScript makes three ideas look more mysterious than they are: an object's hidden…...