<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Menlo, Monaco, 'Courier New', monospace; font-size: 12px; line-height: 18px; white-space: pre;">
<div><span style="color: #c586c0;">case</span>&nbsp;<span style="color: #9cdcfe;">UPLOAD_IMAGES_SUCCESS</span>:{</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">draft</span>.<span style="color: #9cdcfe;">imagePaths</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">draft</span>.<span style="color: #9cdcfe;">imagePaths</span>.<span style="color: #dcdcaa;">concat</span>(<span style="color: #9cdcfe;">action</span>.<span style="color: #9cdcfe;">data</span>);</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">action</span>.<span style="color: #9cdcfe;">data</span>.<span style="color: #dcdcaa;">forEach</span>((<span style="color: #9cdcfe;">p</span>)&nbsp;<span style="color: #569cd6;">=&gt;</span>&nbsp;{</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">draft</span>.<span style="color: #9cdcfe;">imagePaths</span>.<span style="color: #dcdcaa;">push</span>(<span style="color: #9cdcfe;">p</span>);</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;})</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">break</span>;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</div>
<div></div>
<div>
<div style="line-height: 18px;">
<div><span style="color: #c586c0;">case</span>&nbsp;<span style="color: #9cdcfe;">REMOVE_IMAGE</span>:{&nbsp;<span style="color: #6a9955;">//이미지&nbsp;삭제</span></div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>{</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...<span style="color: #9cdcfe;">state</span>,</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">imagePaths:</span>&nbsp;<span style="color: #9cdcfe;">state</span>.<span style="color: #9cdcfe;">imagePaths</span>.<span style="color: #dcdcaa;">filter</span>((<span style="color: #9cdcfe;">v</span>,<span style="color: #9cdcfe;">i</span>)&nbsp;<span style="color: #569cd6;">=&gt;</span>&nbsp;<span style="color: #9cdcfe;">i</span>&nbsp;!==&nbsp;<span style="color: #9cdcfe;">action</span>.<span style="color: #9cdcfe;">index</span>)</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</div>
<div></div>
<div></div>
</div>
</div>
</div>

<p>p에는 action.data 배열의 요소들이 하나씩 넘어옵니다.</p>
<p>마찬가지로 filter의 f에는 배열의 요소들이 하나씩 넘어오고, i는 인덱스(위치)를 가리킵니다.</p>

인프런 커뮤니티 질문&답변

p와 v와 i는 무슨뜻인가요? action.data가 넘어오는건가요???