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3.5 KiB
3.5 KiB
id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit
| id | title | category | status | verification_status | canonical_id | aliases | duplicate_of | source_trust_level | confidence_score | created_at | updated_at | review_reason | merge_history | tags | raw_sources | applied_in | github_commit | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| cpp-strings-concat | C++ String Concatenation | Programming_Language | draft | conceptual |
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B | 0.85 | 2026-07-04 | 2026-07-04 |
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C++ String Concatenation
🎯 한 줄 통찰 (One-line insight)
The source reveals that a C++ string is actually an OBJECT with member functions — not just a data container — proven by append() being callable ON the string itself (firstName.append(lastName)) as an alternative to the + operator, meaning string concatenation in C++ has TWO equally valid forms (operator-based and method-based) that reflect the object-oriented nature of the type, unlike C's char arrays which have no such method-call syntax. [S1]
🧠 핵심 개념 (Core concepts)
+operator for concatenation — joins two strings into a new one. [S1]- Manual spacing — a space must be explicitly included (either inside one of the strings or as a separate
" "literal) since concatenation doesn't add spaces automatically. [S1] .append()method — an alternative to+for concatenation, callable directly on a string object, reflecting that C++ strings are objects with member functions. [S1]
📖 세부 내용 (Details)
- Concatenation with a space baked into one string:
string firstName = "John "; string lastName = "Doe"; string fullName = firstName + lastName; cout << fullName;. [S1] - Concatenation with an explicit space literal:
string fullName = firstName + " " + lastName;. [S1] - Concatenation via the
.append()method:string fullName = firstName.append(lastName); cout << fullName;. [S1]
⚖️ 모순 및 업데이트 (Contradictions & updates)
- 문자열 연결에 자동 공백 삽입 없음: firstName과 lastName을 그냥 더하면 공백 없이 붙기 때문에, 공백을 직접 문자열 안에 포함하거나 별도 " " 리터럴로 추가해야 한다는 점이 명시됨. [S1]
🛠️ 적용 사례 (Applied in summary)
이름(firstName)과 성(lastName)을 합쳐 전체 이름(fullName)을 만드는 예제가 원문에서 직접 실전 활용 사례로 제시됨. [S1]
💻 코드 패턴 (Code patterns)
Concatenating strings via the .append() method instead of the + operator (C++):
string firstName = "John ";
string lastName = "Doe";
string fullName = firstName.append(lastName);
cout << fullName;
✅ 검증 상태 및 신뢰도
- 상태: draft
- 검증 단계: conceptual
- 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
- 신뢰 점수: 0.85
- 중복 검사 결과: 신규 생성 (New discovery)
🔗 지식 그래프 (Knowledge Graph)
- 상위/루트: C++ Tutorial
- 관련 개념: CPP Strings Access, CPP Strings Cstyle, CPP Classes
- 참조 맥락: 문자열 연결 — C 스타일 문자열(Strings Cstyle) 챕터로 이어짐.
📚 출처 (Sources)
- [S1] W3Schools — C++ String Concatenation — https://www.w3schools.com/cpp/cpp_strings_concat.asp
📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "C++ String Concatenation" page (Astra wiki-curation, P-Reinforce v3.1 format).