投稿時間:2021-08-08 01:19:14 RSSフィード2021-08-08 01:00 分まとめ(22件)

カテゴリー等	サイト名等	記事タイトル・トレンドワード等	リンクURL	頻出ワード・要約等/検索ボリューム	登録日
AWS	lambdaタグが付けられた新着投稿 - Qiita	徹底解説！Java8特性	https://qiita.com/Hyman1993/items/d0804abe8dcfed4098ef	FunctionalInterfaceinterfaceConverterltFTgtTconvertFfrom次に、以下のようにlambada式に書き換えましょうか。	2021-08-08 00:35:23
python	Pythonタグが付けられた新着投稿 - Qiita	現在出ている気象警報・注意報を取得する	https://qiita.com/conqueror/items/f72cfdedd01149c35313	現在出ている気象警報・注意報を取得する初めに現在出ている注意報・警報を取得したいと思うことは無いでしょうか現状、それらの情報を取得できるAPIはたいてい有料なことが多いです。	2021-08-08 00:47:16
js	JavaScriptタグが付けられた新着投稿 - Qiita	M5StickCでまたパスワード入力装置を作った	https://qiita.com/poruruba/items/e66a3cc522bffef8136f	複数のパスワードを管理していますが、横のボタンで対象のパスワードを選択することができます。	2021-08-08 00:39:55
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	herokuにpushしてデプロイした後にアプリの情報を確認にてそこに記載されていたURLからwebページに飛びたいのに飛べない。	https://teratail.com/questions/353251?rss=all	なので、実現したいことはアプリの情報を確認して記載されているURLを有効にすることです。	2021-08-08 00:47:43
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	TwitterのAPIキーを取得するため、確認用メールアドレスを変更する方法	https://teratail.com/questions/353250?rss=all	デベロッパー登録しているメールアドレスを変更する手段か、それについてTwitter社へ問い合わせる方法が知りたいです。	2021-08-08 00:24:23
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	shuffle(self.cards) ^ SyntaxError: invalid syntax Process finished with exit code 1のエラーについて	https://teratail.com/questions/353249?rss=all		2021-08-08 00:22:40
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Javascriptで変数の中の文字列に対してXpathを使いたい	https://teratail.com/questions/353248?rss=all	Javascriptで変数の中の文字列に対してXpathを使いたい前提・実現したいことJavascriptで変数の中の文字列に対してXpathで検索をしたいと考えています。	2021-08-08 00:10:39
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Python 特定文字列を含む行の抽出	https://teratail.com/questions/353247?rss=all	Python特定文字列を含む行の抽出前提・実現したいことラインbotに対し、田中出勤と打つとスプレッドシートに次のように表示されるようになっています。	2021-08-08 00:04:49
Ruby	Rubyタグが付けられた新着投稿 - Qiita	【Ruby】SeleniumでPDFをダウンロードする	https://qiita.com/cow_milk/items/ad146962a483cacf0344	【Ruby】SeleniumでPDFをダウンロードするRubyつかってPDFを自動でダウンロードしたい。	2021-08-08 00:46:20
Ruby	Railsタグが付けられた新着投稿 - Qiita	#2 Rails × Vue.jsで動的なページをSPAさせる	https://qiita.com/divclass123/items/a3b632d32ace31cc44ea	consoleloglocationpathnameで、usersが取得できたこれでどんなユーザーでもそのユーザーの投稿が見れるはずaxiosgetapilocationpathnameと書いたしたら、キターめっちゃ部屋で叫んだwwwwwwwwwwwwwこれは嬉しすぎるwwwwwwwわかりずらいですがaaaaddddとかが、コーヒーの名前と値段ですそれらが取得できてるので、他にもコーヒーのexplainとかも取得できるでしょうよしやっとここからrailsからjson形式で取得したデータをもとにvueを書けるぞだがしかし、画像はしっかりrailsから拾えるのか、、、drinkimageとやれば画像が表示されると思った自分が甘かった。	2021-08-08 00:35:19
Ruby	Railsタグが付けられた新着投稿 - Qiita	MySQL	https://qiita.com/W2020T/items/d323b476d14e466344c2	MySQLMySQLの特徴・オープンソースで基本的に無料・Linux、macOS、windowsなど、様々な大規模なデータ処理にも耐えうる環境で使える。	2021-08-08 00:12:18
海外TECH	DEV Community	Unacademy Software Engineer interview experience, Web	https://dev.to/kushagra_mehta/unacademy-software-engineer-interview-experience-web-14d4	Unacademy Software Engineer interview experience WebHello everyone I m Kushagra Mehta a final year student from Jaipur I have joined Unacademy as a Software Engineer In today s blog I ll be sharing my interview experience at Unacademy for a Software Engineer position Big shoutout to Rajat Gupta who wrote a great Interview experience article that helps me along the way Link How it started Hmm This is an interesting one From my side I did some cold DM s in mid of Jun asking for interviews Great videos on itHere Then on the sweet morning of Jul I got a call from HR team of Unacademy asking that Am I available for an interview or not From here my journey started So the call goes like this Basic introduction HR Can you tell me something about yourselfMe I m kushagra HR Awsome manMe OK HR Let s schedule a call for your next roundMe Why not Inside me Am i dreaming or what The recruiter explained everything related to the next rounds over the call and scheduled the first round I asked my recruiter from where he got my profile he said he liked my LinkedIn amp Github profile that s why he reached out to me So boys and girls it s time to improve your online profiles Interview roundsJS Fundamentals hr Frontend with React hr Senior Engineering Manager m Culture m Platform Google MeetCoding Environment CodeSandboxLet s dive into each round in detail ‍JS FundamentalsIt started with a simple intro Then we quickly jumped into the realm of JS The questions revolved around basics concepts of Javascript like this let var const PromisesThe interview was more around discussion based Why or How something is happening We started with output based questions where we discussed What Why amp How the things are happening He told me to implement Promises after that we discussed my approach At last we discussed about eventHandling debouncing amp throttling After that I was asked to build debouncing function and implement a use case for it build Search bar How to prepare javascript info Akshay Saini FE Interview QuesEverything was chill he helped me in every step of the interview Even when I did something wrong with addEventListener he explained why things are not working and helped me with the process ️Frontend with ReactThis happened the day after the first round We started with building a Google timer clone I was asked to explain the approach I took After that We discussed some basic concepts of JavaScriptclosures setTimeout this async await promises async defer event loop Then we jumped into some basic CSS questions like inline inline block Box model etc Then we jumped into the territory of ReactJs The questions ranged from what is React State Props Lifecycle methods Lifecycle in Class componets vs Functional components Virtual DOM At last I was given a basic problem to solve Sort an array of s s and sHow to prepare Front End Interview Handbook List of top ReactJS Interview QuesThis round was also super chill I stuttering a lot in explaining things Even I got confused in some question interviewer help me understanding them ‍Senior Engineering ManagerIt was more of a discussion on my decisions over tech stack team dynamics and culture fit It started with technical questions on Why I choose ReactJs what I did in my previous internship What I learned from there and What I did not like there Then he asked me some behavioral questions like How will you suggest someone to opt ReactJs rather than other options What if there is some conflict with your manager how will you resolve them What if a mentor in a new Organization is not helping much how would you be going to tackle the situation Then I was asked If I have any questions for them and what I would like to work on If you see my profile I m more of a full stack guy They said we re a flexible team you can work on anything until you re sure about its working How to prepare Toughest Interview QuestionsAfter this round I got very excited as I wanted to work as a Full stack guy and got a green flag from the Manager CultureIn this round we discussed the working of the company This round was all about behavioral and situation questions like how will you react if the project you re working on for a few months gets shelved The EndAfter all these rounds I got an Offer letterand I accepted it Volla I really liked the complete interview process at Unacademy All the rounds were more oriented toward discussion rather than a typical Questions and Answers sessions Big thanks to Unacademy for giving me chance to prove myself and to the Talent Acquisition team for the wonderful interview experience I can t even imagine that I would ever receive an offer from Unacadmey whole process was like a dream to me some say I m still dreaming till this date If you re someone who wants to build the future of education please apply here	2021-08-07 15:33:19
海外TECH	Engadget	NASA's Perseverance rover fails to collect its first Mars rock sample	https://www.engadget.com/nasa-perserverance-mars-rover-rock-sample-failure-153947031.html?src=rss	NASA x s Perseverance rover fails to collect its first Mars rock sampleNASA s Perseverance rover just had a rare misstep The space agency has revealed that the robotic vehicle failed to collect Mars rock samples during its first attempt While the percussive drill coring bit and sample tube processing worked quot as intended quot a probe indicated that the tube was empty ーnot exactly what scientists were expecting when everything else checked out Scientists are still investigating what happened and may not have an answer for a few days Perseverance project manager Jennifer Trosper said the team suspected the rock might have reacted in an unexpected way during the coring process The equipment is likely fine in other words The Martian surface has created problems more than once The Phoenix Lander had trouble gathering quot sticky quot soil in for instance while Curiosity and InSight have also had trouble cracking into rocks and the surface itself This initial setback won t necessarily jeopardize Perseverance s mission However NASA will want to keep incidents like this to a minimum The rover was sent to Mars in no small part to collect samples that would eventually return to Earth and help scientists look for signs of past life The fewer samples NASA gets the fewer chances it will have to explore Mars history	2021-08-07 15:39:47
海外TECH	Engadget	Hitting the Books: How our lying eyes trick the brain into seeing motion during movies	https://www.engadget.com/hitting-the-books-biography-of-the-pixel-alvy-ray-smith-mit-press-153048574.html?src=rss	Hitting the Books How our lying eyes trick the brain into seeing motion during moviesVisual media has come a long way since the first proto human cave dwellers used the flickering of torch light to bring the hand drawn art on their walls to life Today the pixel ーdespite its humble low resolution origins ーsits as the current pinnacle of digital display technology In his new book Biography of the Pixel Pixar co founder Alvy Ray Smith examines the fascinating history and development of picture elements hence quot pix quot quot el quot from their often contested start in the labs of pioneering computer researchers like Alan Turing to their ubiquitous presence in modern life In the excerpt below Smith takes a look at the bad old days before digital displays to explain the science behind our brain s ability to perceive motion through the rapid flashing of static images nbsp MIT PressExcerpted from A Biography of the Pixel by Alvy Ray Smith MIT Press How Movies Were Really DoneWhat did the inventors of cinema do or not to make the system they gave us so non ideal First they didn t give us instantaneous samples as required by sampling Film frames are fat They have duration The camera shutter is open for a short exposure time A moving object moves during that short interval and so smears slightly across the frame during the film exposure time It s like what happens when you try to take a long exposure still photo of your child throwing a ball and his arm is just a blur This turns out to be a saving grace of cinema as it was actually practiced Second they made it so each frame is projected twice at least by the projector Ouch That s not sampling at all Why did the inventors do that Simple economics demanded it frames per second costs half as much film as frames per second But the eye needs to be refreshed about times per second or the retinal image fades between frames Actually is close enough to to work in a dark theater How do you get from You show each frame twice If you show just frames per second the screen appears to flicker Hence the “flicks from the early days of cinema before higher frame rates were adopted The third thing the original inventors did was to shut off the light between projected frames This meant that times per second nothing blackness was projected into the eye ーinside the pupil onto the retina It s convenient for movie machines ーboth the camera and projector part ーto “shutter to blackness like this between frames It allows time for the mechanical advancement of the next film frame into position In a camera it keeps the film from recording the real world during the physical advancement of the film In a projector it keeps the moving film out of eyesight as it s physically advanced When you ask how a movie projector works some people say something like this There s a top reel of film which is the source of film and a bottom take up reel The film moves from reel to reel and passes between the light source of the projector and its lens which magnifies the frame size image up to screen size In other words the film moves continuously past the light source But that doesn t work The eye sees exactly what s there and with this scheme the eye would see one frame sliding away as the next frame slides in from the opposite side It would see the sliding And that won t work What a projector actually does is exactly this It brings each frame into fixed position with the light source blocked That s the function of the shutter Then the shutter opens and the illuminated frame projects onto the screen Then the shutter closes Then it opens again and the illuminated frame is projected a second time onto the screen Then the shutter closes and the next frame slides into position and so forth We ve just described the discrete or intermittent movement of film through a projector as opposed to unworkable continuous movement The same idea holds for a camera The physical device that implements this action is called in fact an intermittent movement This is the key notion in cinema history that is comparable to the conditional branch instruction in computer history The mad rush to the movie machine turned on who first got a projector to work correctly and that hinged on who got an intermittent movement working properly It s a defining notion To recap An actual film based movie projector doesn t reconstruct a continuous visual flow from the frame samples and present this to the eye Instead it sends “fat samples ーthick with time duration and smeared motion ーdirectly to the eye s retina It sends each frame twice and it sends blackness between It s up to the brain to reconstruct motion from these inputs How does that work Somehow the eye brain system “reconstructs the visual flow that s represented by the fat visual samples it receives Of course it really does no such thing Light intensities come in through the pupil as input But the output from the eye to the brain through the optic nerve is an electrochemical pulse train Neuronal pulse trains aren t visual flows It could be that the retina actually does reconstruct a visual flow and then converts it to pulse trains for brain consumption The responses of some of the neurons in the eye certainly suggest the spreader function complete with a high positive hump and negative lobes But brain activity is beyond the scope of this book Let s concentrate instead on the customary explanations of the perception of motion from sequences of still snapshots Perception of MotionThe classic explanation is hoary old persistence of vision It s a real characteristic of human vision once an image stimulus to the retina ceases we continue to perceive the image there for a short while But persistence of vision explains only why you don t see the blackness between frames in the case of film based movies If an actor or an animated character moves to a new position between frames then ーby persistence of vision ーyou should see him in both positions two Humphrey Bogarts two Buzz Lightyears In fact your retinas do see both one fading out as the other comes inーeach frame is projected long enough to ensure this That s persistence of vision But it doesn t explain why you perceive one moving object not two objects at different positions What your brain does with the information from the retinas determines whether you perceive two Bogarts in two different positions or one Bogart moving between them Psychophysicists have performed experiments to determine the characteristics of another real brain phenomenon called apparent motion The experiments don t explain how the brain perceives motion but they do describe the limitations of the phenomenon A small white dot on a black background is presented to a subject s retina Then that dot is removed and another dot is presented in a different position The experimenters can vary two things the spatial separation of the two dots and the time delay between position change The brain perceives one dot here and another dot there but only if the distance and delays are long enough If the distance and delays are short the brain perceives that the dot moves from one position to the other It s apparent motion because no actual motion is presented to the eye The brain perceives what it doesn t see Motion BlurPersistence of vision is such that we still perceive the first image when the second one arrives That sounds a lot like frame spreading A frame of short duration spreads out in time and adds to the next frame also spread out in time It s as if the retina does the image spreading and the adding of successive spread frames Something like this must be going on because we perceive a continuous visual field although the film projector doesn t present one You can think of the shape of the persistence function of the eye as the shape of the frame spreader that s built into us human perceivers Another reason we can assume that the eye brain system must be doing a reconstruction one that implicitly uses the Sampling Theorem is because we perceive exactly the errors we would expect if that were the actual mechanismーsuch as wagon wheels spinning backward Classic cel animation ーof the old ink on celluloid variety ーrelies on the apparent motion phenomenon The old animators knew intuitively how to keep the successive frames of a movement inside its “not too far not too slow boundaries If they needed to exceed those limits they had tricks to help us perceive the motion They drew actual speed lines which showed the brain the direction of motion and implied that it was fast like a blur Or they provided a POOF of dust to mark the rapid descent of Wile E Coyote as he stepped unexpectedly off a mesa in hot pursuit of that truly wily Road Runner They provided a visual language that the brain could interpret Exceed the apparent motion limits ーwithout those animators tricks ーand the results are ugly You may have seen old school stop motion animations ーsuch as Ray Harryhausen s classic sword fighting skeletons in Jason and the Argonauts ーthat are plagued by an unpleasant jerking motion of the characters You re seeing double at least ーseveral edges of a skeleton at the same time ーand correctly interpret it as motion but painfully so The edges stutter or “judder or “strobe across the screen Those words reflect the pain inflicted by staccato motion Live action movies are sequences of discrete frames just like animations Why don t these movies stutter Imagine directing Uma Thurman to stay within “not too far not too slow limits There s a general explanation that works It s called motion blur and it s simple and pretty A frame that s recorded by a real movie camera is fat with duration It s not a sample at a single instant like a Road Runner or a Harryhausen frame Motion blur is what you see in a still photograph when the subject moves and the shutter isn t fast enough to stop the motion In still photographs it s often an unintended result but it turns out to be a feature in movies Without the blur all movies would look as jerky as Harryhausen s skeletonsーunless Uma miraculously stayed within limits The motion blur of moving objects in a fat frame gives clues to the brain about what is moving and what is not The direction of a blur gives the direction of motion and its length indicates the speed Somehow mysteriously the brain converts that spatial information ーthe blurs ーinto temporal information and then perceives motion with the help of the apparent motion phenomenon	2021-08-07 15:30:48
海外科学	NYT > Science	Giraffes May Be as Socially Complex as Chimps and Elephants	https://www.nytimes.com/2021/08/07/science/giraffes-social-behavior.html	friendships	2021-08-07 15:20:45
ニュース	BBC News - Home	Princess Charlotte joins Big Butterfly Count	https://www.bbc.co.uk/news/uk-58130935	conservation	2021-08-07 15:21:32
ニュース	BBC News - Home	Covid: Pubs busy as most rules end in Wales	https://www.bbc.co.uk/news/uk-wales-58086808	public	2021-08-07 15:28:09
ニュース	BBC News - Home	Logan Mwangi: Balloons tribute to boy found dead in river	https://www.bbc.co.uk/news/uk-wales-58128725	logan	2021-08-07 15:47:26
ニュース	BBC News - Home	Chelsea close to sealing £97.5m Lukaku deal	https://www.bbc.co.uk/sport/football/58130354	inter	2021-08-07 15:27:40
ニュース	BBC News - Home	Covid-19 in the UK: How many coronavirus cases are there in my area?	https://www.bbc.co.uk/news/uk-51768274	cases	2021-08-07 15:46:00
サブカルネタ	ラーブロ	吉祥寺 武蔵家＠北松本（長野県）　「ラーメン」	http://feedproxy.google.com/~r/rablo/~3/wwbfuxUA3s8/single_feed.php	続きを読む	2021-08-07 16:01:36
北海道	北海道新聞	フランス男子が初優勝　バレーボール・７日	https://www.hokkaido-np.co.jp/article/576231/	男子	2021-08-08 00:17:00