投稿時間:2022-01-04 22:29:36 RSSフィード2022-01-04 22:00 分まとめ(31件)

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python	Pythonタグが付けられた新着投稿 - Qiita	CNNによる画像分類：背景の影響を低減させる正則化	https://qiita.com/tabintone/items/8f5593bf1083a55c4b72	最も良いときのAccuracyは普通のResNetが、alphaとして正則化を行なったモデルがでした。	2022-01-04 21:05:27
js	JavaScriptタグが付けられた新着投稿 - Qiita	PHPで名前空間が使われていない古いライブラリを使うときにハマった話	https://qiita.com/coret/items/c0dc51fe78005d6c35df	もちろん古いライブラリの使いたいクラスをrequire文で読み込んでいることが条件だ。	2022-01-04 21:34:38
js	JavaScriptタグが付けられた新着投稿 - Qiita	history.backを使わないで戻るボタンを作成する	https://qiita.com/kirisaki1218/items/6187a726aae9d4a1ca21	historybackを使わないで戻るボタンを作成するはじめにhistorybackを使用して「戻る」ボタンを実装していたが、firefoxでセッションエラーになってしまうため別の方法で戻るボタンを実装したい。	2022-01-04 21:28:13
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	WordPressのwebサイト上の.jsファイル実行でエラーが発生する	https://teratail.com/questions/376631?rss=all	WordPressのwebサイト上のjsファイル実行でエラーが発生するWordPress上のWebサイトを編集しようとしているのですがWordPressの管理画面から個別サイトに入ろうとすると画面に何も表示されません。	2022-01-04 21:56:20
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	pythonによるツイッターの投稿分析	https://teratail.com/questions/376630?rss=all	下記サイトを参考にAPIの使用承認を取り、作成したのですが、エラー内容に記載のエラーが表示され実行できません。	2022-01-04 21:45:29
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	カラム同士の和でソートする方法	https://teratail.com/questions/376629?rss=all	カラム同士の和でソートする方法非常によくあるケースだと思うのですが、シンプルな方法がハタと分からずご教授頂きたいです。	2022-01-04 21:43:04
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	nginxのデフォルト画面が表示される	https://teratail.com/questions/376628?rss=all	nginxのデフォルト画面が表示されるDjangoで作成したアプリをawsにデプロイしようとしています。	2022-01-04 21:38:48
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	ローカルストレージ異なるページ間でデータ移動	https://teratail.com/questions/376627?rss=all	ahtml	2022-01-04 21:34:32
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	[swift]遷移先の全ての画面にナビゲーションバーを表示する	https://teratail.com/questions/376626?rss=all	swift遷移先の全ての画面にナビゲーションバーを表示する前提・実現したいこと遷移先の全ての画面にナビゲーションバーを表示する上の画像のようにナビゲーションコントローラから起動して一番最初に表示させる画面に矢印が伸びているのですが、矢印の先の画面にナビゲーションバーが表示されず困っています。	2022-01-04 21:33:43
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	ajaxに関して。リロードしないと動かない。	https://teratail.com/questions/376625?rss=all	usersshowにお気に入り機能の星マークをクリックして切り替えれるようにしたいのですが、回回リロードしないと切り替わらない状態です。	2022-01-04 21:27:12
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	VNC Viewerを使ってRasberry Piへのファイルの受け渡しができない。	https://teratail.com/questions/376624?rss=all	RasberrynbspPi⇒Windowsへファイルの受け渡しはできています。	2022-01-04 21:20:45
Docker	dockerタグが付けられた新着投稿 - Qiita	Docker環境でPHP7→PHP8へバージョンアップ	https://qiita.com/h_k92/items/0846dba937596424f940	バージョンはdockerfileで管理してるので修正します。	2022-01-04 21:41:34
技術ブログ	Developers.IO	クラスメソッドにジョインしましたShirotaです（再）	https://dev.classmethod.jp/articles/shirota-rejoined-classmethod/	shirota	2022-01-04 12:36:56
海外TECH	Ars Technica	The most important computer you’ve never heard of	https://arstechnica.com/?p=1821580	computer	2022-01-04 12:30:30
海外TECH	MakeUseOf	Online Banking Card Readers: How Do They Work and How Secure Are They?	https://www.makeuseof.com/tag/online-banking-card-readers-work-secure/	Online Banking Card Readers How Do They Work and How Secure Are They Online banking card readers have been around since the late s offering an extra layer of security beyond traditional online authentication We look at how they work and if if they re really that secure	2022-01-04 12:06:39
海外TECH	DEV Community	5 Top App Development Mistakes to Avoid in 2022	https://dev.to/rachael_ray018/5-top-app-development-mistakes-to-avoid-in-2022-14oo	Top App Development Mistakes to Avoid in Investing in mobile app development will help your brand get a competitive edge over your rival Mobile apps can help you build your brand awareness boost your company s revenue and provide better support and services to your customers Also it lets you forge brand loyalty and increase customer engagement and satisfaction So it comes as no surprise that apps have massively inundated businesses Just check out these interesting stats to see how apps have effortlessly weaved into the fabric of our lives Mobile app downloads have grown since the pandemic Mobile app downloads will reach billion by That s a increase since Customers have spent hours and minutes on their smartphones daily by It s a minute increase compared to the previous year Mobile apps account for of all digital media time of customers admitted that an app helps determine brand credibility The point is that developing a mobile app for your brand will be one of the best decisions for your company Although people make many mistakes when building one which leads to failure of their application We don t want that to happen to you So through this post I will be sharing what mistakes you should avoid when building your mobile app Let s get started Mistake Failing To Understand Your Customer s RequirementsPeople often assume that everyone will love their mobile app They don t conduct any research regarding their customer s requirements and needs Such endeavors always end up as a disaster Always determine your target audience before you start working on the project User research is essential Conduct a thorough understanding of your customer s motivations personas behavior patterns and demographics Ask yourself the following questions before commencing the app development Is your mobile app s solution valuable and sustainable Is the app designed as per the latest market trends Are the features well executed and user friendly Is the app idea original Are the markets oversaturated with similar ones Both marketing and the development of a mobile app depend on user research Hence you cannot rely on assumptions regarding consumers behavior and needs Also determine what your competitors are doing and how you can be different from them Good research will save you lots of time and energy in the long run Mistake Underestimating the Total BudgetYou have to consider the resources required to develop the mobile app It s not like you have a dream of owning an application one fine day and immediately start building it the next day Every resource will require an investment Hence creating a budget is essential before starting the mobile app development There are multiple online calculators to determine the mobile app development cost upfront We will share with you the best one We will share with you the GoodFirms survey report It will help you determine the cost of developing a mobile app Mistake Poor User InterfaceFirst impressions matter Pay close attention to the user interface of your mobile app There are abundant applications at the app stores People don t hesitate to remove apps from their devices if they don t find them interesting The point is User retention is more important than ever now So if you want your app to be downloaded in the first place make sure it s UI is user friendly Hence prioritize the mobile design process to build an application that users will love to use Keep the following points in mind when designing the application UI Design an app flowchart first before you start working on the application Focus on resolution Avoid designing for low resolution Don t add animation in the intro People are impatient and an unskippable one will lead to the uninstallation of the app Ensure that the animation used in indicating the loading time keeps customers engaged Add a gesture based interface to your UI Allow users to navigate easily via shortcuts and also reverse their actions quickly The UI design should be consistent Provide informative feedback Design dialog to allow closurePrevent errors as much as possible Mistake Adding Too Many FeaturesAdding too many features won t make the user appreciate your mobile app more Nowadays the word feature rich gets frequently used by marketers developers and companies They believe it to be a positive quality of their application but it s a common mistake Having too many features can make a mobile app cumbersome Adding those extra features means you will have to spend more time resources and effort during mobile app development Hence go for the main feature and add only those side ones that support the application s purpose If you check out the Zomato app here are all its features Adding food to the cartLocation detection for address Payment portalOrder trackingHelp and supportAll these side features fulfill the essential purpose of the app None of them feels extra That s how your mobile app should be too Mistake Focus on Downloads Instead of RetentionOne major blunder most app entrepreneurs make is focusing on the total no of downloads instead of retention They consider it as proof of their app s success It is not always the case that high download rates mean that the application is a hit Nonetheless the app s true strength and quality depend on the user retention rate Regardless of this reality People spend thousands of dollars on user acquisition and completely ignore user retention But then that s not how it should be as existing app users can bring in massive ROI return of investment if they are correctly engaged Loyal consumers not only repeat purchases but also give quality feedback and word of mouth advertising Here I will share some tips for improving user engagement and app retention Create a pleasant onboarding experience Add push notifications in the right way Use branded in app messages Attract people with different offers discounts and loyalty programs Encourage and reward feedback from your customers User retention will save you a lot of money that you are spending on marketing A truly successful app will generate both high downloads and retention rates Avoid the above Mistakes to give your App a Strong Start and a Long Lease of LifeA mobile app will aid you in promoting your business products and services to customers from anywhere and at any time To ensure its success keep the following points in mind Have a thorough understanding of your customer s requirements Properly plan your budget Add only those features that are relevant to your application s core purpose Focus on retention rate Make the UI of your mobile app user friendly If you are ready to start working on your mobile app head over to Goodfirm s mobile app development service companies and from there you can choose which of the companies is ideal for transforming your app idea into a reality I hope this blog helps you in launching a successful product in the market Keep these five points in mind and your app s success will be inevitable	2022-01-04 12:05:24
海外TECH	DEV Community	Database character sets and collations explained – why utf8 is not UTF-8	https://dev.to/flokoe/database-character-sets-and-collations-explained-why-utf8-is-not-utf-8-3h7b	Database character sets and collations explained why utf is not UTF Table Of Contents Character sets and collations explainedCharater sets The tale of �Why utf in MySQL is not UTF Collations How to sort thingsWhat about performance ConclusionThe relationship between character sets and collations always seemed pretty vague to me let alone the possible impact on performance So if you are like me and want to know the difference between utf and utfmb and why mixed collations are bad for your database performance read on Character sets and collations explainedSince computers only understand binary and humans don t we use character sets to map binary to specific characters The difficulty was that different nations used different symbols and sometimes mapped the same binary sequence to other characters So based on the character set you used the same data could mean different things Furthermore depending on your language you may sort certain characters differently than in other languages To quote the MariaDB documentation A character set is a set of characters and its mapping to binary while a collation is the rules for comparing and sorting a particular character set MariaDB Character Set and Collation OverviewFor example the first character of this article T LATIN CAPITAL LETTER T in binary looks like The computer reads this binary sequence and knows that this is in decimal Now it looks up which character maps to this number Using the UTF character set the number equals T Charater sets The tale of �One of the most known character sets is ASCII American Standard Code for Information Interchange It only supports different characters and is nowadays primarily used for art hjm A sperm whale and a bowl of petunias above the surface of an alien planet by Harry Mason Hajoma Someone even recreated the entire fourth episode of Star Wars in ASCII Even though characters are enough to cover the English language and a few basic symbols the limited range is unsuitable for international and modern communication Therefore the UTF standard was created which is backward compatible with ASCII but allows up to four bytes per character instead of just one Four bytes enable pretty much every character of every language and that is why we can use all these funny emojis and don t see something like � Over time it became the de facto standard for everything Why utf in MySQL is not UTF Of course such an extensive and versatile character set is handy for a database that may store very different and complex data That is why MySQL already implemented the standard for UTF RFC in the pre pre release of MySQL on March The old standard even allowed for six bytes per character For whatever reason a few months later in September a MySQL developer decided to push a one byte commit UTF now works with up to byte sequences only to the repository and change the allowed bytes from six to three Since then the character set called utf has been a crippled and proprietary variation as it neither conforms to the old nor the new definition RFC of UTF The misleading name still causes issues today This is probably one of most expensive single char commits in world morphles Nov Because the utf character set only allows bytes you can t store some special characters in a database that utilizes this character set Unfortunately no one knows who made the change as all names were lost when moving the repository from BitKeeper to GitHub To remediate this mistake MySQL added the utfmb charset in version utfmb fully implements the current standard Now utf is an alias for utfmb and will be switched to utfmb Collations How to sort thingsThe order of numbers is pretty straightforward four is lower and comes before the number five Even the English alphabet is still pretty easy But what about other languages with additional characters or completely different symbols Which emoji comes first SMILING FACE WITH OPEN MOUTH or FACE SAVOURING DELICIOUS FOOD Collations sets of algorithms determine how to sort certain characters Which collation works best for you depends on your use case But first let s see how we can determine the difference between each collation To get a list of all collations your server supports we can execute the following shorted view MariaDB none gt SHOW COLLATION Collation Charset Id Default Compiled Sortlen utfmb general ci utfmb Yes Yes utfmb bin utfmb Yes utfmb unicode ci utfmb Yes The collation name is separated into three parts The first part is always the character set the collation belongs to A collation can only be associated with one character set but there can be multiple collations for a character set The second part always describes the functionality of the collation And the optional third part can be one or more additional feature flags Here is a list of common feature flags SuffixMeaningcicase insensitivecscase sensitiveThe middle part is the most interesting because it specifies the collation algorithm bin stands for binary and sorts data by its binary notation and does not consider any language specific rules general honors some rules but uses a simplified algorithm favoring speed over accuracy unicode or its versioned variants like unicode use the official UCS Universal Coded Character Set algorithms Unicode collations provide the most accurate sorting For example utfmb general ci does not knwo how to sort s and the German character ß sharp S in contrast to utfmb unicode ci which sorts ß just fine ß comes after s MariaDB none gt SELECT s lt ß COLLATE utfmb general ci s lt ß COLLATE utfmb general ci row in set sec MariaDB none gt SELECT s gt ß COLLATE utfmb general ci s gt ß COLLATE utfmb general ci row in set sec MariaDB none gt SELECT s lt ß COLLATE utfmb unicode ci s lt ß COLLATE utfmb unicode ci row in set sec MariaDB none gt SELECT s gt ß COLLATE utfmb unicode ci s gt ß COLLATE utfmb unicode ci row in set sec Unfortunately utfmb unicode ci is based on UCS which is very old Even the newer utfmb unicode ci UCS is more than ten years old But newer collations are already discussed and we may see collations based on UCS in version of MariaDB MySQL already implemented a few collations based on more recent UCS versions There are language specific variants like utfmb german ci but I have never used them personally I recommend sticking to the unicode versions as they fit most use cases What about performance There are some considerations when choosing your collation The most important one is always to use the same collation when comparing strings For example when joining two tables with different sorting rulesets MariaDB MySQL cannot use indices and falls back scanning the entire tables Regarding the different collation algorithms The unicode variants should be slower than the general variant due to the more complex algorithms but this was years ago when computers were much weaker than now With modern hardware the speed gain should be hardly notable One last concern is the size stored on the disk because UTF supports four bytes per character But since UTF is a variable width character encoding it only uses as many bytes as needed For example the first characters like ASCII only use one byte ConclusionNow you know the difference between utf and utfmb and what collation to use There is no reason to use utf utfmb and I believe everyone who chose utf expected to get the real UTF utfmb not a crippled version So to use it you have to specify utfmb explicitly Furthermore we should prefer accuracy over speed There is no need to use an old and quirky collation like utfmb general ci with modern hardware If you ask yourself how to convert your database stay tuned and follow me I will cover this topic in my next post Until then have fun Did I add value I don t like ads and I respect your privacy Therefore my blog has no advertisements or any tracking cookies If you like what you read please support my work Buy me a beerIf you can t make monetary support I understand Please like and share this content on the platform of your choice	2022-01-04 12:04:32
Apple	AppleInsider - Frontpage News	AT&T, Verizon pause 5G expansion plans for 2 weeks	https://appleinsider.com/articles/22/01/04/att-verizon-pause-5g-expansion-plans-for-2-weeks?utm_medium=rss	AT amp T Verizon pause G expansion plans for weeksAT amp T and Verizon have reversed course over their G rollouts deciding late on Monday to abide by a request by the FAA to stall their major network upgrades for two weeks via Pascal Renet PexelsThe carriers initially rejected the request from the Federal Aviation Administration and government officials to stall the introduction of C Band spectrum to their networks for two weeks with a few airport related exceptions However late on Monday the two carriers changed their minds agreeing to hold off on the deployment temporarily instead of pressing forward Read more	2022-01-04 12:48:53
Apple	AppleInsider - Frontpage News	Even billion dollar brands start with free fonts to make their logos	https://appleinsider.com/articles/22/01/04/even-billion-dollar-brands-start-with-free-fonts-to-make-their-logos?utm_medium=rss	Even billion dollar brands start with free fonts to make their logosAn extensive Twitter thread spells out which free or inexpensive fonts to start with to at least closely mimic the logos of Netflix LinkedIn Google Amazon and so many more A surprising number of corporate big brand logos are based on fonts that any Mac user can access for free or at low cost A thread on Twitter has demonstrated around how readily different logos can be done with these fonts Fonts used by big brands A thread Netflix pic twitter com wjUhPQmXqーEmmanuel Lumumba e lumumba January Read more	2022-01-04 12:50:13
ニュース	BBC News - Home	We can't jab world every four to six months - scientist	https://www.bbc.co.uk/news/uk-59865108?at_medium=RSS&at_campaign=KARANGA	andrew	2022-01-04 12:39:15
ニュース	BBC News - Home	Sir Keir Starmer sets out vision of 'straight leadership'	https://www.bbc.co.uk/news/uk-politics-59862654?at_medium=RSS&at_campaign=KARANGA	restore	2022-01-04 12:51:54
ニュース	BBC News - Home	Channel migrants: Crossing numbers in 2021 triple 2020's figure	https://www.bbc.co.uk/news/uk-england-kent-59861376?at_medium=RSS&at_campaign=KARANGA	figurethe	2022-01-04 12:09:22
ニュース	BBC News - Home	What are the new Covid rules for the UK?	https://www.bbc.co.uk/news/explainers-52530518?at_medium=RSS&at_campaign=KARANGA	omicron	2022-01-04 12:08:35
LifeHuck	ライフハッカー［日本版］	お気に入りの容器をフタ付きに！ マルチ機能のシリコンキャップに注目	https://www.lifehacker.jp/2022/01/248138-machi-ya-skuzee-start.html	skuzee	2022-01-04 22:00:00
LifeHuck	ライフハッカー［日本版］	【Amazon初売り】 食品やキッチン用品がお得に。日清のごろっとグラノーラが60％オフ、イワキの耐熱ガラス容器が42％オフなど	https://www.lifehacker.jp/2022/01/amazon-timesale-hatsuuri-2022-0104-3.html	amazon	2022-01-04 21:15:00
北海道	北海道新聞	ショパンコンクール２位の反田さん　市長特別表彰　４日の凱旋コンサートに合わせ	https://www.hokkaido-np.co.jp/article/629915/	表彰	2022-01-04 21:19:47
北海道	北海道新聞	国内で１２６８人がコロナ感染　千人超は昨年１０月以来	https://www.hokkaido-np.co.jp/article/630012/	新型コロナウイルス	2022-01-04 21:10:42
北海道	北海道新聞	道内でオミクロン株初確認　医療関係者、子どもの感染を警戒　飲食・観光業者はため息	https://www.hokkaido-np.co.jp/article/630013/	新型コロナウイルス	2022-01-04 21:14:37
北海道	北海道新聞	正月三が日の札幌　戻る人出　百貨店やスキー場にぎわう	https://www.hokkaido-np.co.jp/article/630016/	正月三が日	2022-01-04 21:01:00
ビジネス	東洋経済オンライン	中国スマホOPPO､半導体｢独自開発｣にかける野望 初の画像処理チップ発表､旗艦スマホに搭載へ | 「財新」中国Biz＆Tech | 東洋経済オンライン	https://toyokeizai.net/articles/-/478681?utm_source=rss&utm_medium=http&utm_campaign=link_back	biztech	2022-01-04 21:30:00
仮想通貨	BITPRESS（ビットプレス）	東京ハッシュ、1/23に東京で「マイニングの仕組みとレンディング運用をわかりやすく解説」開催	https://bitpress.jp/count2/3_15_12972	運用	2022-01-04 21:45:07