강의 잘 듣고있습니다. WordLadder 코드에대해서 질문이 있는데요. 인풋의 wordList가 길어지면서 실행시간이 좀 지연되는듯 보여 다시 살펴봤는데, 세 생각에는 dict set 을 neighbors와 공유하면서 찾을때마다 dict를 지워가면서 감소해 나가는게 어떨지 싶은데요. 한번 살펴봐 주세요.

좋은 강의 감사합니다. 보다보니 강사님께서 어떤 키를 누르시면 코드가 이쁘게 정렬되는데 어떤 것을 사용하신 건가요?

섹션1,2,3 영상 전부 학습하고 시간문제상 섹션4와5 전체(LOWPOLY, HIGHPOLY 탱크제작하기) 건너뛰고 섹션6,7(texture제작재질입히기,리깅&애니메이션)을 학습하고자 하는데요 혹 섹션4,5 개념이 누락되어 섹션6,7을이해하기 어려워지거나 학습이 불가한가요? (섹션2의LOWPOLY '자동차'만들기 만으로는 섹션6,7학습준비에 부족한가요?) 만약 4,5학습없이  불가하다면 4,5중 꼭 봐야하는부분이 있을까요? 

좋은 강의 만들어주셔서 잘들었습니다 근데 강의자료는 혹시 받아볼수있을까요? 출력해서 보면서 다시한번 정리를 하고자합니다.

   {dummy.imagePaths.map((v, i) => {           return (               <img src={'http://localhost:3065/' + v} style={{ width: '200px' }} alt={v} />               <div>                 <Button>제거</Button>               </div>             </div>           )         })} 이부분 정확히 이해가 안가네요  {'http://localhost:3065/' 이것은 무엇을 위한것인가요? ?

안녕하세요 강의 잘보고있습니다! 잘따라하던 도중 막히는부분이 있어 질문 드립니다. 컨트랙과 로그인한 계정의 address가 같으면 changeUI함수를 통해 div id가 owner인 곳을 보이게끔 하는 곳에서 막혔는데 이유를 모르겠습니다 컨트랙계정과 로그인계정의 주소가 다르다고 인식해서 안되는것같은데 똑같은 계정으로 했는데 왜 안되는건지 모르겠네요ㅠㅠ 혹시 이유를 알수있을까요? 혹시나싶어 새로 계정만들고 해봤는데도 안뜹니다ㅠㅠ 실행화면

제출 버튼을 눌러도 Meta Mask 승인창이 뜨지 않고 계속 제출할 수 있는 창만 새로고침됩니다..ㅠㅠ 또한 다른 질문을 참고하여 위 사진과 같이 로컬호스트를 추가하였는데 Meta Mask 승인창이 뜨지 않습니다.. 가나슈 포트넘버 8545, 메타마스크 8545로 연결되어있는데 무엇이 잘못된걸까요?ㅠ__ㅠ PS C:\Users\alsgp\Blockchain\real-estate> npm run dev 입력 후  제출을 눌러도 콘솔창에서는 에러가 따로 뜨지않고 아래와 같이 뜹니다.. ㅠㅠ 19.09.21 23:39:38 304 GET /real-estate.json 19.09.21 23:39:38 304 GET /RealEstate.json 19.09.21 23:39:38 304 GET /images/apartment.jpg 19.09.21 23:39:38 304 GET /images/townhouse.jpg 19.09.21 23:39:38 304 GET /images/house.jpg

실무에서 여러 테이블 조인하고 group by까지 해야할 때 ,기존의 엔티티 클래스말고 새로운 DTO 같은 클래스를 만들어서 결과를 받으시나요? 업무적으로 group by가 필요한 부분들은 어떻게 처리하시는지 궁금하네요. 기존의 엔티티로는 힘들어 보여서요.

안녕하세요. 올리디버거는 64비트 디버깅을 지원하지 않고 더이상 업데이트도 없는데 혹시 올리를 대신할만한 무료 디버거가 있을까요?

안녕하세요 출력값에 제가 원하는 값이 나오기는 하는데 None이라는 것도 같이 출력되서요.. 혹시 왜 그런건가요? <div class="course_title">모두를 위한 딥러닝 - 기본적인 머신러닝과 딥러닝 강좌</div> None <div class="course_title">R로 하는 웹크롤링 - 입문편</div> None <div class="course_title">누구나 할 수 있는 안드로이드 앱 개발 - 2 (Kotlin)</div> None None None 그리고 print(e.select_one("div.card-content > div"))에서 뒤에 print(e.select_one("div.card-content > div").string) 으로 하면  AttributeError: 'NoneType' object has no attribute 'string' 이런 에러가 나는데 잘 모르겠네요 ㅠㅜ from bs4 import BeautifulSoup import urllib.request as req import sys import io sys.stdout = io.TextIOWrapper(sys.stdout.detach(), encoding = 'utf-8') sys.stderr = io.TextIOWrapper(sys.stderr.detach(), encoding = 'utf-8') url = "https://www.inflearn.com/" res = req.urlopen(url).read() soup = BeautifulSoup(res, "html.parser") recommand = soup.select("div.columns.is-mobile") for e in recommand:     print(e.select_one("div.card-content > div"))

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저희가 훅스로 만드는법 클래스로 만드는법 모두 배웠고 두 개 모두 사용해서 1번 컴포넌트는 훅스로 2번 컴포넌트는 클래스로 이런식으로 만들수 있을텐데 이렇게 하는 것을 권장하지는 않나요? 리스트 컴포넌트는 클래스로 요소 컴포넌트는 훅스로 만들면 편하지 않을까요?

16:08 ~ 16:27 동안 까만화면이 나오고 있네요.

활용편에서 나올 내용같은데 공부하다 궁금해서 문의드립니다. ㅠㅠ querydsl을 적용중이고 A Table year  name   value 2019   a           10 2019   b           11 2019   c            11 2020   d             9 2020   e            20 이 있을 때 ,  year로 그룹핑해서 value가 맥스인값을 보여주고 싶습니다. 2019  (b,11) , (c,11) 2020  (e, 20) 이렇게 값을 가져오게 하고 싶습니다. 최종적으로는 (b,11) (c,11)(e,20)로 출력하고 싶습니다. List<a>로 받고 싶습니다. 년도순, 이름순으로 값을 저장하고 싶습니다. a는 Qa를 a로 받은 것입니다. JPAQueryFactory.from(a).transform(groupBy(a.year).as(list(a))); 저는 이정도에서 더이상 진도가 안나네요. ㅠㅠ 

저는 앞의 학생을 기준으로 뒤에 모든 학생을 검사해서 더 큰 학생이 있으면 세지 않는 방식으로 했는데 어디서  잘못된 부분인지 모르겠어서 질문드립니다 ㅠㅠ  간단한 개념이라 될 줄 알았는데 왜인지 이런 방식으로 답이 안나오네요 ㅠㅠ 

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import React from 'react'; import { render } from 'react-dom'; import { hot } from 'react-hot-loader/root'; import WordRelay from './WordRelay'; const Hot = hot(WordRelay); render(<Hot />, document.querySelector('#root')); const React = require('react'); const ReactDom = require('react-dom'); const { hot } = require('react-hot-loader/root'); const WordRelay = require('./WordRelay'); const Hot = hot(WordRelay); ReactDom.render(<Hot />, document.querySelector('#root')); 요 두 모양으로 썼는데 위에꺼는 되고 아래꺼는 안되네요.. [HMR] Waiting for update signal from WDS... react.development.js:172 Warning: React.createElement: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: object. Check the render method of `HotExportedComponent`. in HotExportedComponent warningWithoutStack @ react.development.js:172 warning @ react.development.js:612 createElementWithValidation @ react.development.js:1944 React$$1.createElement @ react-hot-loader.development.js:2846 render @ react-hot-loader.development.js:3127 finishClassComponent @ react-dom.development.js:17039 updateClassComponent @ react-dom.development.js:16994 beginWork$1 @ react-dom.development.js:18505 beginWork$$1 @ react-dom.development.js:23193 performUnitOfWork @ react-dom.development.js:22208 workLoopSync @ react-dom.development.js:22185 renderRoot @ react-dom.development.js:21878 scheduleUpdateOnFiber @ react-dom.development.js:21419 scheduleRootUpdate @ react-dom.development.js:24319 updateContainerAtExpirationTime @ react-dom.development.js:24347 updateContainer @ react-dom.development.js:24436 (anonymous) @ react-dom.development.js:24963 unbatchedUpdates @ react-dom.development.js:21687 legacyRenderSubtreeIntoContainer @ react-dom.development.js:24962 render @ react-dom.development.js:25042 (anonymous) @ client.jsx:21 (anonymous) @ client.jsx:40 ./client.jsx @ app.js:818 __webpack_require__ @ app.js:727 fn @ app.js:101 (anonymous) @ client:3 1 @ app.js:1516 __webpack_require__ @ app.js:727 (anonymous) @ app.js:794 (anonymous) @ app.js:797 react-hot-loader.development.js:2345 React-Hot-Loader: react-🔥-dom patch is not detected. React 16.6+ features may not work. AppContainer @ react-hot-loader.development.js:2345 AppContainer @ VM1223:14 constructClassInstance @ react-dom.development.js:13308 updateClassComponent @ react-dom.development.js:16985 beginWork$1 @ react-dom.development.js:18505 beginWork$$1 @ react-dom.development.js:23193 performUnitOfWork @ react-dom.development.js:22208 workLoopSync @ react-dom.development.js:22185 renderRoot @ react-dom.development.js:21878 scheduleUpdateOnFiber @ react-dom.development.js:21419 scheduleRootUpdate @ react-dom.development.js:24319 updateContainerAtExpirationTime @ react-dom.development.js:24347 updateContainer @ react-dom.development.js:24436 (anonymous) @ react-dom.development.js:24963 unbatchedUpdates @ react-dom.development.js:21687 legacyRenderSubtreeIntoContainer @ react-dom.development.js:24962 render @ react-dom.development.js:25042 (anonymous) @ client.jsx:21 (anonymous) @ client.jsx:40 ./client.jsx @ app.js:818 __webpack_require__ @ app.js:727 fn @ app.js:101 (anonymous) @ client:3 1 @ app.js:1516 __webpack_require__ @ app.js:727 (anonymous) @ app.js:794 (anonymous) @ app.js:797 react-dom.development.js:24036 Uncaught Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. Check the render method of `HotExportedComponent`. at eval (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:24036:34) at createFiberFromTypeAndProps (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:24039:13) at createFiberFromElement (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:24060:15) at reconcileSingleElement (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:14530:23) at reconcileChildFibers (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:14587:35) at reconcileChildren (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:16691:28) at finishClassComponent (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:17056:5) at updateClassComponent (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:16994:24) at beginWork$1 (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:18505:16) at HTMLUnknownElement.callCallback (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:347:14) (anonymous) @ react-dom.development.js:24036 createFiberFromTypeAndProps @ react-dom.development.js:24039 createFiberFromElement @ react-dom.development.js:24060 reconcileSingleElement @ react-dom.development.js:14530 reconcileChildFibers @ react-dom.development.js:14587 reconcileChildren @ react-dom.development.js:16691 finishClassComponent @ react-dom.development.js:17056 updateClassComponent @ react-dom.development.js:16994 beginWork$1 @ react-dom.development.js:18505 callCallback @ react-dom.development.js:347 invokeGuardedCallbackDev @ react-dom.development.js:397 invokeGuardedCallback @ react-dom.development.js:454 beginWork$$1 @ react-dom.development.js:23217 performUnitOfWork @ react-dom.development.js:22208 workLoopSync @ react-dom.development.js:22185 renderRoot @ react-dom.development.js:21878 scheduleUpdateOnFiber @ react-dom.development.js:21419 scheduleRootUpdate @ react-dom.development.js:24319 updateContainerAtExpirationTime @ react-dom.development.js:24347 updateContainer @ react-dom.development.js:24436 (anonymous) @ react-dom.development.js:24963 unbatchedUpdates @ react-dom.development.js:21687 legacyRenderSubtreeIntoContainer @ react-dom.development.js:24962 render @ react-dom.development.js:25042 (anonymous) @ client.jsx:21 (anonymous) @ client.jsx:40 ./client.jsx @ app.js:818 __webpack_require__ @ app.js:727 fn @ app.js:101 (anonymous) @ client:3 1 @ app.js:1516 __webpack_require__ @ app.js:727 (anonymous) @ app.js:794 (anonymous) @ app.js:797 Show 4 more frames react-dom.development.js:19814 The above error occurred in the <AppContainer> component: in AppContainer (created by HotExportedComponent) in HotExportedComponent Consider adding an error boundary to your tree to customize error handling behavior. Visit https://fb.me/react-error-boundaries to learn more about error boundaries. logCapturedError @ react-dom.development.js:19814 logError @ react-dom.development.js:19850 update.callback @ react-dom.development.js:20929 callCallback @ react-dom.development.js:12929 commitUpdateEffects @ react-dom.development.js:12968 commitUpdateQueue @ react-dom.development.js:12959 commitLifeCycles @ react-dom.development.js:20098 commitLayoutEffects @ react-dom.development.js:22813 callCallback @ react-dom.development.js:347 invokeGuardedCallbackDev @ react-dom.development.js:397 invokeGuardedCallback @ react-dom.development.js:454 commitRootImpl @ react-dom.development.js:22585 unstable_runWithPriority @ scheduler.development.js:643 runWithPriority$2 @ react-dom.development.js:11305 commitRoot @ react-dom.development.js:22414 scheduleUpdateOnFiber @ react-dom.development.js:21421 scheduleRootUpdate @ react-dom.development.js:24319 updateContainerAtExpirationTime @ react-dom.development.js:24347 updateContainer @ react-dom.development.js:24436 (anonymous) @ react-dom.development.js:24963 unbatchedUpdates @ react-dom.development.js:21687 legacyRenderSubtreeIntoContainer @ react-dom.development.js:24962 render @ react-dom.development.js:25042 (anonymous) @ client.jsx:21 (anonymous) @ client.jsx:40 ./client.jsx @ app.js:818 __webpack_require__ @ app.js:727 fn @ app.js:101 (anonymous) @ client:3 1 @ app.js:1516 __webpack_require__ @ app.js:727 (anonymous) @ app.js:794 (anonymous) @ app.js:797 Show 3 more frames react-dom.development.js:24036 Uncaught Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. Check the render method of `HotExportedComponent`. at eval (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:24036:34) at createFiberFromTypeAndProps (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:24039:13) at createFiberFromElement (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:24060:15) at reconcileSingleElement (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:14530:23) at reconcileChildFibers (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:14587:35) at reconcileChildren (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:16691:28) at finishClassComponent (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:17056:5) at updateClassComponent (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:16994:24) at beginWork$1 (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:18505:16) at HTMLUnknownElement.callCallback (webpack:///./node_modules/react-dom/cjs/react-dom.development.js?:347:14)

첫번째 R.drawable에 저장돼있는 그림 파일들이 왜 정수 배열에 들어가는건가요? 두번째 이미지뷰와 텍스트뷰 아이디가 왜 정수배열로 들어가죠? 정수 배열은 정수값을 가져야만 형성할 수 있는 거 아닌가요?

영상의 22:00 직전에 E/SchedPolicy: set_timerslack_ns write failed: Operation not permitted permition 에러가 발생합니다 

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