投稿時間:2022-10-30 23:14:06 RSSフィード2022-10-30 23:00 分まとめ(15件)

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IT	気になる、記になる…	新型｢MacBook Pro 14/16インチ｣や新型｢Mac mini｣の登場は2023年1〜3月に − Bloombergの著名記者も報告	https://taisy0.com/2022/10/30/164478.html	bloomberg	2022-10-30 13:35:12
js	JavaScriptタグが付けられた新着投稿 - Qiita	Google Apps Script(GAS)でメールアドレスの一覧を取得するメモ	https://qiita.com/n0bisuke/items/efaecb2547719398d189	filter	2022-10-30 22:05:05
Ruby	Rubyタグが付けられた新着投稿 - Qiita	【解決済】Rubyで配列内のハッシュで同じキーの値を合算(inject、merge)	https://qiita.com/kazuki-ayimon/items/a9487f65d2b0ac7c2736	datawaterretortfo	2022-10-30 22:42:33
AWS	AWSタグが付けられた新着投稿 - Qiita	特定のAWSサービスからのみSQSへのアクセスを許可するアクセスポリシーの設定	https://qiita.com/hirai-11/items/22cecb5f91a4328345e1	principal	2022-10-30 22:47:53
技術ブログ	Developers.IO	[AWS Skill Builder] JAMジャーニー : ネットワーキング編をやってみた	https://dev.classmethod.jp/articles/aws-skill-builder-jam-journey-networking/	awsskillbuilder	2022-10-30 13:45:39
技術ブログ	Developers.IO	AWS Backup의 VSS Windows 옵션에 대해	https://dev.classmethod.jp/articles/about-aws-backup-vss-windows-option-kr/	AWS Backup의VSS Windows 옵션에대해안녕하세요클래스메소드의수재입니다 이번에작업중Windows server with SQL Server의EC를백업하기위해AWS Backup을사용하게되었습니다 이중Windows	2022-10-30 13:19:14
海外TECH	DEV Community	Signature verification on hybrid method	https://dev.to/ponyjackal/signature-verification-on-hybrid-method-2349	Signature verification on hybrid methodIt s true that hybrid approach in the design of web applications can not be ignored While on chain smart contracts are great to verify things as a single source of truth it is not so great for data manipulation That s where hybrid comes into play We normally make some calculations off chain on top of synced database with on chain storages and then reflect the result onto smart contracts as soon as we make sure that it s valid And yet this validation is not that easy and this is the most vulnerable point in whole application cause malicious actors can always try to pretend to be a valid user Of course there is a number of approaches for this as you know the most well knowns are Merkle proof and signature verification Today I am going to deep dive into signature verification in hybrid applications I will more focus on the overall architecture rather that how we use signature verification If you are not familiar with signature and EIP you d better first go through it Here is the basic diagram below about the flow As you can see there are steps to go in terms of frontend application I think it will make you more sense to overview this in frontend s perspective since it is actually the entry point for the users to the application Step once user triggers actions on the frontend it will require to sign a message And then it will make an API request to backend in order to get signature singed by private wallet Example requests body would be like this userAddress string userSignature string When it comes to request body it will vary depends on the actions user made and the application you are building For instance it would include collection address token id price in case user is trying to list his NFT on the marketplace Step Once frontend gets signature from the backend side now it s time to make a transaction here just for your note user is actually making a transaction through UI The very basic voucher struct would be something like this user address nonce uint expiry uint signature bytes In smart contract there must be some validations about signature like if the signature is signed by the private wallet user is matched to transaction sender nonce is correct and finally voucher is not expired by checking expiry You are free to add more validations for your specific needs FYI it s obvious to make an update on signatures mapping and nonce once signature is valid and you are about to proceed your update on states mapping address gt uint public nonces mapping bytes gt bool public signatures nonces voucher user signatures voucher signature true Step There must be a result from the transaction right whether it s succeed or reverted Only if transaction is succeed and state variables are updated on chain we are now ready to update a database in order to sync with on chain You will call the API for this with request body includes userSignature string signature by user txSignature string signature by private wallet For this you have to validate if transaction is succeed and states are updated it might be a good way to check signature mapping if txSingature is valid or not and you might want to do some updates on your DB and then return the result to the user Finally the user will get the result of his action on UI Thanks for your attention I tried to make this as short as possible but at the same time I tried to give you more sense I am going to walk through tableland implementation for dynamic metadata which is the must solve thing in PE games So stay tuned	2022-10-30 13:52:34
海外TECH	DEV Community	How to Make Responsive Landing Page Using Html CSS JavaScript	https://dev.to/codewithsadee/how-to-make-responsive-landing-page-using-html-css-javascript-13jj	How to Make Responsive Landing Page Using Html CSS JavaScriptHow to Make Responsive Landing Page Using Html CSS JavaScriptThis video will show you how to How to Make Responsive Landing Page Using Html CSS JavaScript Essential linksDownload the starter file to practice ️Timestamps Demo File structure Project initial Preloading Header Hero section Instruction section Top restaurant section CTA section Stats section Testimonials section Partnership Newsletter Footer Media queries	2022-10-30 13:24:45
Apple	AppleInsider - Frontpage News	Apple reportedly won't launch new M2 Macs until 2023	https://appleinsider.com/articles/22/10/30/apple-reportedly-wont-launch-new-m2-macs-until-2023?utm_medium=rss	Apple reportedly won x t launch new M Macs until Apple won t be bringing out new Mac models until a report claims with the updated M versions of the inch MacBook Pro and inch MacBook Pro now scheduled for the first quarter Future Macs are expected to be M based Expectations of a third set of fall launches from Apple were put into question following comments from Apple s leadership in its quarterly results In a report on Sunday it seems that Apple has made the call and is holding off on other Mac launches in Read more	2022-10-30 13:58:51
Apple	AppleInsider - Frontpage News	Tim Cook casts doubt on new M2 MacBook Pros in 2022	https://appleinsider.com/articles/22/10/29/tim-cook-sheds-doubt-on-a-fall-m2-macbook-pro-update?utm_medium=rss	Tim Cook casts doubt on new M MacBook Pros in Based on comments from Apple CEO Tim Cook during the quarterly earnings report the odds of a November release for a new inch and inch MacBook Pro have dropped inch MacBook ProThe fall is Apple s main product launch period with the annual iPhone refresh being the centerpiece of events Flanking them are Apple s other ecosystem changes covering product areas including the iPad the Apple Watch and the Mac which can sometimes get their own events Read more	2022-10-30 13:32:11
ニュース	BBC News - Home	Reports of petrol bombs thrown at migrant centre	https://www.bbc.co.uk/news/uk-england-kent-63446683?at_medium=RSS&at_campaign=KARANGA	dover	2022-10-30 13:53:13
ニュース	BBC News - Home	Brazil's Bolsonaro and Lula battle it out for top job	https://www.bbc.co.uk/news/world-latin-america-63439230?at_medium=RSS&at_campaign=KARANGA	jobbrazilians	2022-10-30 13:33:19
ニュース	BBC News - Home	Michael Gove commits to 300,000 homes target	https://www.bbc.co.uk/news/uk-politics-63445365?at_medium=RSS&at_campaign=KARANGA	stalinist	2022-10-30 13:31:50
ニュース	BBC News - Home	Seoul Halloween crush: Aftermath of disaster in pictures	https://www.bbc.co.uk/news/world-asia-63444231?at_medium=RSS&at_campaign=KARANGA	crush	2022-10-30 13:38:33
ニュース	BBC News - Home	Wasps: Offer to buy Premiership club accepted by joint administrators	https://www.bbc.co.uk/sport/rugby-union/63447055?at_medium=RSS&at_campaign=KARANGA	premiership	2022-10-30 13:24:43