投稿時間:2023-07-17 16:10:51 RSSフィード2023-07-17 16:00 分まとめ(14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
python	Pythonタグが付けられた新着投稿 - Qiita	OpenMMLabの始め方@SUMMER 2023	https://qiita.com/fam_taro/items/7f028dfeae2a79a10fe1	famtaro	2023-07-17 15:44:35
python	Pythonタグが付けられた新着投稿 - Qiita	線形回帰③　確率的勾配降下法の実践	https://qiita.com/892noske/items/c7cf4aca88be3c27e4e3	ridge	2023-07-17 15:14:14
python	Pythonタグが付けられた新着投稿 - Qiita	Pythonでマンデルブロ集合を美しく描画する(Orbit Trap編)	https://qiita.com/T-STAR/items/11229df2b6db462fb743	orbittra	2023-07-17 15:00:56
golang	Goタグが付けられた新着投稿 - Qiita	Goのテストコードを書く時パッケージ名に_testをつけるべきか？	https://qiita.com/interharuki/items/18f31546947608398ebd	suffix	2023-07-17 15:14:38
技術ブログ	Developers.IO	LlamaIndexを完全に理解するチュートリアル その１：処理の概念や流れを理解する基礎編（v0.7.9対応）	https://dev.classmethod.jp/articles/llamaindex-tutorial-001-overview-v0-7-9/	index	2023-07-17 06:44:45
技術ブログ	Developers.IO	API Gatewayでバックエンドレスポンスのbodyに含まれる配列の要素数を統合レスポンス機能でheaderに追加してみた	https://dev.classmethod.jp/articles/api-gateway-array-count-to-header/	amazonapigatewa	2023-07-17 06:36:40
海外TECH	DEV Community	Ethereum's Consensus Puzzle: Solving the Trust Equation in a Blockchain Revolution	https://dev.to/sahil_4555/ethereums-consensus-puzzle-solving-the-trust-equation-in-a-blockchain-revolution-2146	Ethereum x s Consensus Puzzle Solving the Trust Equation in a Blockchain Revolutionwe ve been talking about consensus rules these are the rules that everyone must agree on for a decentralized system to work properly Consensus is all about reaching an agreement among different participants in a distributed system so they can all have the same view of what s happening When it comes to decentralized record keeping and verification it s not enough to just trust that everything is correct This is a challenge in decentralized networks because there s no central authority to decide what s true That s one of the reasons why blockchain platforms are appealing they resist censorship and don t rely on a central authority for access to information However this lack of a trusted authority means that any disagreements or differences have to be resolved in other ways That s where consensus algorithms come in they help ensure security and decentralization can work together Consensus is really important in blockchains because there s valuable money involved So in the context of blockchains consensus is about getting everyone to agree on the same information while keeping the system decentralized It s like having a set of strict rules without any one person or organization in charge Instead power and control are spread across a large network of participants who benefit by following the rules and being honest The ability to reach consensus across a distributed network even when there are challenges and no central control is the main principle behind all open public blockchains To tackle this challenge and maintain decentralization the blockchain community is always experimenting with different ways of achieving consensus This chapter explores these different approaches and how they impact smart contract blockchains like Ethereum Consensus algorithms are an important part of how blockchains work but they operate behind the scenes away from the everyday use of smart contracts It s like the plumbing of the system that you don t need to worry about Using Ethereum is similar to using the internet you don t need to know how the data is routed to access websites or send emails Similarly you don t need to understand the technical details of consensus algorithms to use Ethereum and interact with smart contracts Consensus via Proof Of Work PoW The person who created Bitcoin also came up with a consensus algorithm called proof of work PoW PoW is a crucial invention that forms the foundation of Bitcoin However the term mining used for PoW can lead to a misconception about its primary purpose People often assume that mining is mainly about creating new currency similar to real world mining for valuable resources In reality the main goal of mining and other consensus models is to secure the blockchain and keep control decentralized among many participants The reward of newly minted currency serves as an incentive for those who contribute to the system s security rather than the primary objective The reward is a means to achieve decentralized security In PoW there is also a corresponding punishment in the form of the energy cost required to participate in mining If participants don t follow the rules and earn the reward they risk losing the funds they spent on electricity for mining Therefore PoW consensus involves finding a balance between risk and reward motivating participants to act honestly based on self interest Currently Ethereum operates as a PoW blockchain using a PoW algorithm called Ethash which has slight differences compared to Bitcoin s algorithm Ethash serves the same purpose of securing the blockchain and decentralizing control However Ethereum is also exploring the possibility of transitioning to ProgPOW a more ASIC resistant PoW algorithm ProgPOW is still being developed at the time of writing Consensus via Proof of Stake PoS Before proof of work PoW became widely adopted there were other consensus algorithms proposed including variations of a consensus algorithm called proof of stake PoS PoW was actually created as an alternative to PoS After Bitcoin s success many blockchains followed its lead and used PoW However the research on consensus algorithms has revived interest in PoS and greatly advanced the technology From the beginning Ethereum s founders intended to switch its consensus algorithm to PoS They purposely introduced a difficulty bomb in Ethereum s PoW which gradually makes mining more difficult pushing the transition to PoS At the time of writing this book Ethereum still relies on PoW but the research on a PoS alternative called Casper is nearly complete The introduction of Casper has faced delays requiring adjustments to prevent the difficulty bomb from rendering PoW obsolete In general a PoS algorithm works like this The blockchain maintains a set of validators and anyone holding the blockchain s main cryptocurrency e g ether in Ethereum can become a validator by locking up their cryptocurrency in a deposit Validators take turns proposing and voting on the next valid block and the weight of their votes depends on the size of their deposit or stake It s important to note that a validator risks losing their deposit if the block they staked it on is rejected by the majority of validators On the other hand validators receive a small reward based on their stake for every accepted block This system of reward and punishment encourages validators to act honestly and follow the consensus rules The main difference between PoS and PoW is that in PoS the punishment is intrinsic to the blockchain such as losing staked cryptocurrency while in PoW the punishment is extrinsic like losing funds spent on electricity Ethash Ethereum s Proof of Work AlgorithmEthash is the proof of work PoW algorithm used in Ethereum It combines Vitalik Buterin s Dagger algorithm and Thaddeus Dryja s Hashimoto algorithm Ethash relies on a large dataset called the DAG which is a directed acyclic graph The DAG starts at around GB in size and gradually grows with each epoch blocks or approximately hours The purpose of the DAG is to make Ethash PoW resistant to specialized mining equipment called ASICs By depending on a large and frequently accessed data structure Ethash aims to prevent the dominance of ASIC miners The goal is to keep mining power decentralized and accessible to more people worldwide using consumer level graphics processing units GPUs instead This helps avoid the concentration of mining power in the hands of a few industrial operations as seen in Bitcoin Ethereum s founders wanted to avoid centralization in PoW mining where those with access to specialized silicon fabrication factories and big budgets could dominate the mining infrastructure and undermine the security of the consensus algorithm However the use of GPUs for mining Ethereum caused a shortage and price increase in impacting gamers and leading to purchase restrictions Until recently the threat of ASIC miners on the Ethereum network was minimal The Ethereum development team s plans to transition to proof of stake PoS likely deterred ASIC suppliers However with other cryptocurrencies using the Ethash algorithm emerging and Ethereum Classic remaining on PoW ASIC mining may become more prevalent on the Ethereum network before the transition to PoS This means ASICs designed for the PoW algorithm may still find use in mining other cryptocurrencies Casper Ethereum s Proof of Stake AlgorithmCasper is Ethereum s planned proof of stake PoS algorithm designed to replace the current proof of work PoW algorithm PoS is a different approach to achieving consensus in a blockchain network compared to PoW With Casper the Ethereum blockchain will no longer rely on miners solving complex mathematical puzzles to validate transactions and create new blocks Instead the consensus will be achieved through a system where participants known as validators are chosen based on the number of cryptocurrency tokens they hold and are willing to stake as collateral Validators will lock up a certain amount of their cryptocurrency tokens in a deposit to show their commitment to the network The weight of their influence in the consensus process will be proportional to the amount they have staked Validators will take turns proposing and validating blocks and the majority of validators need to agree on a proposed block for it to be accepted and added to the blockchain Validators will be rewarded with additional cryptocurrency tokens for their honest participation while dishonest behavior or attempts to attack the network can result in penalties including the loss of their staked tokens One of the main advantages of Casper s PoS algorithm is that it requires significantly less energy consumption compared to PoW Since there is no need for resource intensive mining processes the environmental impact is reduced Additionally Casper aims to improve the security of the network by making it more difficult and costly for attackers to compromise the consensus The transition to Casper is a significant milestone for Ethereum as it will enable faster transaction confirmations increased scalability and a more secure and sustainable network However the implementation of Casper has faced delays and challenges and the Ethereum community is actively working to address any remaining technical and economic considerations before its full deployment Principle of ConsensusTo better understand consensus algorithms it helps to ask a few important questions Who has the ability to change what happened in the past and how This relates to the concept of immutability in the blockchain It s important to know who can alter or manipulate past transactions and data Who has the power to shape the future and how This refers to the concept of finality Understanding who can determine what happens in the future and how they do it is crucial What is the cost involved in making changes There may be costs associated with modifying the blockchain such as computational power or financial expenses Knowing the cost can provide insights into the feasibility and security of the system How decentralized is the power to make changes Decentralization is an important principle in blockchain technology It s important to assess how power is distributed among participants and whether it is concentrated in the hands of a few How can we detect if something has changed and how will we know Transparency and accountability are essential in a decentralized system It s important to have mechanisms in place to detect and verify any changes that occur Consensus algorithms are continually evolving aiming to address these questions in innovative ways Researchers and developers are working on finding solutions that enhance immutability increase the security of the future minimize costs promote decentralization and ensure transparency in the blockchain ecosystem Controversy and CompetitionYou might be wondering why there are so many different consensus algorithms and which one is better The truth is there is no one size fits all answer The best consensus algorithm depends on various factors and involves trade offs Different consensus algorithms excel in different areas such as immutability finality decentralization and cost It s important to ask specific questions about what you want to achieve when determining which algorithm is better suited for your needs The design of consensus algorithms is a hotly debated topic in the blockchain industry with billions of dollars at stake It s an ongoing experiment where different approaches are being tested and compared Ultimately time will reveal which algorithms stand the test of adversarial conditions and deliver the desired results ConclusionConsensus algorithms are essential in blockchain technology to ensure agreement among participants and maintain security Different algorithms like proof of work PoW and proof of stake PoS have their strengths and weaknesses Ethereum currently uses PoW but plans to switch to PoS with Casper The choice of algorithm depends on factors like immutability finality decentralization and cost There is no one best algorithm as it varies based on specific needs The blockchain industry is constantly evolving experimenting with different algorithms and their effectiveness will be determined over time	2023-07-17 06:53:49
海外TECH	DEV Community	Weekly Roundup (Jul 10): 🔥Hot Topics🔥 in #workplace, #sharepoint, and #powerplatform	https://dev.to/jaloplo/weekly-roundup-jul-10-hot-topics-in-workplace-sharepoint-and-powerplatform-2mka	Weekly Roundup Jul Hot Topicsin workplace sharepoint and powerplatformHey fellow developers It s jaloplo here to give you the latest scoop on what s been happening in the workplace sharepoint and powerplatform communities workplaceThe Rise of Copilot Is Syntex Becoming Obsolete by Jaime LópezThe Growing Trend of Digital Nomads and Its Impact on the Hospitality Industry by frankochristoSkip Level Meeting Questions amp Tips Guide by anthonypelleNavigating contract terms and addressing unpaid extra hours A guide for employees by MikaZuki Augus sharepointSet properties for from SPFx Application Customizer by Kinga powerplatform Power Automate The Power of Human in the Loop by david wyattThat s all for this week s roundup Thanks for tuning in and remember to keep the discussions lively and informative in our tags If you have any suggestions for future topics feel free to drop them in the comments below See you next week	2023-07-17 06:45:03
海外TECH	DEV Community	Optimized Images in Nuxt with Cloudinary	https://dev.to/jacobandrewsky/optimized-images-in-nuxt-with-cloudinary-4897	Optimized Images in Nuxt with CloudinarySome time ago colbyfayock messaged me on Twitter to talk about potential Cloudinary Nuxt community work As I really love to work on the community projects I instantly agreed to meet and talk what we can do to make this partnership and integration better Just to be clear previously there was already a really nice integration between Cloudinary and Nuxt created by mayashavin It was a really great project that was used widely in Nuxt ecosystem But new version of Nuxt came and with it a new interface and new architecture and because of that many of the modules integrations was not compatible with newly released version From this point I would like to appreciate all the work that Maya put into this module Kudos to you Colby then reached me to ask if I would be interested in helping in migrating the module and becoming an official maintainer of it I talked to Nuxt core team and decided that it is indeed a great idea so I started working on this new version And today this is also what I want to show in this article This new integration between Cloudinary amp Nuxt to give you the ability to easily deliver performant and optimized images ️ What is NuxtCloudinary NuxtCloudinary is an integration module between Cloudinary Digital Asset Management System and Nuxt Framework It delivers great Developer Experience by automating a lot of the repetitive work so that you as a user can focus on what matters gt Delivering great experience to your users To see the official documentation head to Here you will see all the available features of the new version of the module Keep in mind that it is not the end so new features will appear from time to time gt Stay tuned But thanks to this module you can do magic such as the one below If you are interested in learning more about Cloudinary amp Image optimizations check out my other article here UsageThe usage of the module is relatively simple First of all you need to install the nuxtjs cloudinary package yarn add nuxtjs cloudinaryNext add this package to modules array in nuxt config ts file export default defineNuxtConfig modules nuxtjs cloudinary Finally let s add CLOUDINARY CLOUD NAME environment variable CLOUDINARY CLOUD NAME lt YOUR CLOUDINARY CLOUD NAME gt And that s it You are now ready to start working with Cloudinary in Nuxt It is especially easy with the autoimported CldImage vue component lt template gt lt CldImage src cld sample width height alt My Awesome Image gt lt template gt And you should get the following result in the browser SummaryNicely done By following these simple steps you have integrated Cloudinary into your Nuxt application Now you can start delivering performant and optimized images to your users Let us know here or in the module repository about new features that you would like us to add to the module	2023-07-17 06:24:26
海外ニュース	Japan Times latest articles	Blasts on Crimea Bridge kill two, threaten Russian war supply lines	https://www.japantimes.co.jp/news/2023/07/17/world/crimea-bridge-damage/	Blasts on Crimea Bridge kill two threaten Russian war supply linesImages from the scene showed no traffic crossing the kilometer road and rail bridge which links Russia to Crimea which Russia annexed from Ukraine	2023-07-17 15:29:34
ニュース	BBC News - Home	Plan to crack down on 'rip-off' university degrees	https://www.bbc.co.uk/news/uk-politics-66216005?at_medium=RSS&at_campaign=KARANGA	skilled	2023-07-17 06:26:21
ニュース	BBC News - Home	Terror attack survivors condemn compensation body	https://www.bbc.co.uk/news/uk-66218928?at_medium=RSS&at_campaign=KARANGA	report	2023-07-17 06:33:43
ニュース	BBC News - Home	Twitter loses nearly half advertising revenue since Elon Musk takeover	https://www.bbc.co.uk/news/business-66217641?at_medium=RSS&at_campaign=KARANGA	heavy	2023-07-17 06:23:39
ニュース	BBC News - Home	Lionel Messi: Inter Miami unveil Argentina forward to sold-out crowd	https://www.bbc.co.uk/sport/football/66219125?at_medium=RSS&at_campaign=KARANGA	lauderdale	2023-07-17 06:57:02