2nd/10_Wiki/Dev/Topic_CSharp/CSharp_Arrays_Loop.md

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
csharp-arrays-loop	C# Loop Through Arrays	Programming_Language	draft	conceptual		for loop array C# foreach array C# C# 배열 순회		B	0.82	2026-07-04	2026-07-04			csharp programming-language w3schools arrays loops	https://www.w3schools.com/cs/cs_arrays_loop.php

CSharp Arrays Loop

🎯 한 줄 통찰 (One-line insight)

This chapter directly recycles the exact foreach example already shown in the Loops section's Foreach chapter — same cars array, same code — but now frames it explicitly AGAINST the indexed for loop alternative, making an explicit value judgment the earlier chapter didn't state outright: foreach is "easier to write... does not require a counter... more readable," a direct trade-off statement this wiki hasn't seen phrased this bluntly for C or C++'s equivalent range-based loops. [S1]

🧠 핵심 개념 (Core concepts)

• Indexed for loop over an array — uses .Length as the loop bound: for (int i = 0; i < cars.Length; i++) { Console.WriteLine(cars[i]); }. [S1]
• foreach loop over an array — no counter, no .Length, no index: foreach (string i in cars) { Console.WriteLine(i); }. [S1]
• Explicit trade-off stated — foreach is easier to write, doesn't need a counter, and is more readable than the indexed for — a direct recommendation, not just a neutral alternative. [S1]

📖 세부 내용 (Details)

• Indexed loop: string[] cars = {"Volvo", "BMW", "Ford", "Mazda"}; for (int i = 0; i < cars.Length; i++) { Console.WriteLine(cars[i]); }. [S1]
• Foreach loop (identical to the earlier Foreach Loop chapter's own example): string[] cars = {"Volvo", "BMW", "Ford", "Mazda"}; foreach (string i in cars) { Console.WriteLine(i); }. [S1]
• Reading aid: "for each string element (called i — as in index) in cars, print out the value of i." [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• foreach가 for보다 명시적으로 권장됨: 이전 Foreach Loop 챕터는 foreach를 단순히 소개만 했지만, 이번 챕터는 for와 나란히 비교하며 "카운터가 필요 없고 더 읽기 쉽다"고 명시적으로 우위를 선언한다는 점이 확인됨 — 두 방식이 동등한 대안이 아니라 foreach가 권장되는 선택임을 분명히 함. [S1]

🛠️ 적용 사례 (Applied in summary)

동일한 자동차 이름 배열을 인덱스 기반 for 루프와 foreach 루프 두 가지로 순회해 비교하는 예제가 원문에서 직접 실전 활용 사례로 제시됨. [S1]

💻 코드 패턴 (Code patterns)

Indexed for loop vs. foreach — same output, different readability (C#):

string[] cars = {"Volvo", "BMW", "Ford", "Mazda"};

for (int i = 0; i < cars.Length; i++)
{
    Console.WriteLine(cars[i]);
}

foreach (string i in cars)
{
    Console.WriteLine(i);
}

✅ 검증 상태 및 신뢰도

• 상태: draft
• 검증 단계: conceptual
• 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
• 신뢰 점수: 0.82
• 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

• 상위/루트: C# Tutorial
• 관련 개념: CSharp Arrays, CSharp Arrays Sort, CSharp Foreach Loop
• 참조 맥락: Arrays 섹션 — Sort Arrays 챕터로 이어짐.

📚 출처 (Sources)

• [S1] W3Schools — C# Loop Through Arrays — https://www.w3schools.com/cs/cs_arrays_loop.php

📝 변경 이력 (Change history)

• 2026-07-04: Initial draft synthesized from the W3Schools "C# Loop Through Arrays" page (Astra wiki-curation, P-Reinforce v3.1 format).