投稿時間:2022-02-21 19:37:43 RSSフィード2022-02-21 19:00 分まとめ(40件)

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ROBOT	ロボスタ	川崎競馬場上空でドローンショーを実施 2月24日、25日に川崎競馬場とのコラボ演出、テレシーちゃん、QRコードが出現	https://robotstart.info/2022/02/21/drone-show-kawasaki-horse-racing.html	川崎競馬場上空でドローンショーを実施月日、日に川崎競馬場とのコラボ演出、テレシーちゃん、QRコードが出現シェアツイートはてブ株式会社レッドクリフは年月日、日に「テレシードローンショーin川崎競馬場」を川崎競馬場神奈川県川崎市で開催することを発表した。	2022-02-21 09:45:50
IT	ITmedia 総合記事一覧	[ITmedia News] 棋士専用ノートPC「GALLERIA碁・将棋MASTER」発売　「LeelaZero」「elmo」などAI搭載	https://www.itmedia.co.jp/news/articles/2202/21/news163.html	galleria	2022-02-21 18:30:00
IT	情報システムリーダーのためのIT情報専門サイト IT Leaders	サイバーフォートレス、透かし文字による漏洩対策「ScreenWatermark」に新版、特定URLで表示 | IT Leaders	https://it.impress.co.jp/articles/-/22743	サイバーフォートレス、透かし文字による漏洩対策「ScreenWatermark」に新版、特定URLで表示ITLeadersサイバーフォートレスは年月日、透かし文字表示ソフトウェア「ScreenWatermark」スクリーンウォーターマークをバージョンアップした。	2022-02-21 18:04:00
python	Pythonタグが付けられた新着投稿 - Qiita	MATLAB x OpenAI Gym: Reinforcement Learning App for Easiest Reinforcement Learning experience!	https://qiita.com/HYCE/items/71bc2069419b063d74e9	MATLAB x OpenAI Gym Reinforcement Learning App for Easiest Reinforcement Learning experience IntroductionNote thatThe original article written in Japanese is found here The Reinforcement Learning Designer App released with MATLAB Ra provides an intuitive way to perform complex parts of Reinforcement Learning such as ConfigurationTrainingSimulationfrom GUI It may be fresh in your mind that MATLAB users were in a frenzy about its capabilities This article attempts to use this feature to train the OpenAI Gym environment with ease Since reinforcement learning with MATLAB Simulink is no longer Challenging with this App I dare to tackle the thorny path of Python OpenAI Gym integration Reinforcement Learning Designer App Set up Python virtual environment for reinforcement learningThe default Python configuration for MATLAB looks like as follows WarningHaving a Python which is compatible with your MATLAB is a big prerequisite to call Python from MATLAB Learn more about using Python from MATLABWe could have installed an OpenAI Gym library in this Python virtual environment but since it takes time to resolve dependencies between Python libraries e g versioning we will simply prepare another Python virtual environment just for reinforcement learning from the terminal as follows In case you are wondering Anaconda is being used for this time Consoleconda create name matlab rl python Next installing OpenAI Gym We ve got two ways to install it condapipthough I had a trouble with conda so let s close the eyes to the details and install OpenAI Gym with pip as follows Consolepip install gym version pip install gym atari Now we will use the pyenv command for Python integration from MATLAB but in order to use the Python virtual environment we created above with MATLAB we will use the following command Code Display rlPython Version C Users HYCE anaconda envs matlab rl python exe pyenv rlPython This allows to access the new Python environment from MATLAB OpenAI Gym EnvironementLet us pull one of the environments for reinforcement learning available from OpenAI Gym Codemyenv py gym make MountainCar v See GitHub OpenAI Gym for the Python implementaion of this environment As you can see from the picture of the environment it is a simple environment where the goal is to accelerate the car left and right to complete the climb up the mountain The observations are considered to be the x y coordinates the speed and the reward signal as well as the end condition achievement flag isdone signal Details of this environmentAll we need to know is the I O of the environment at the end of the day so we gather information from GitHub OpenAI Gym Make Observations of the environmentAccording to the information above there are two pieces of information available as follows Car positionCar velocityLet us check them out Use the details function to display the properties of a Python object Codedetails myenv reset The data property of the object after taking an action is probably the observation data Coderes myenv reset res dataSurely these figures are the two pieces of observational data Render and display responses to random actionsIn myenv object you ll see some typical methods steprenderThese methods are considered to be useful to confirm the detals of each step such asPosition Observation car position Velocity Observation car velocity Reward Reward of step isdone End condition achievement flag Codefor i action int randi myenv step action myenv render endIt works Preparation to receive the data back from the environment Now that you ve seen how it works check the output with one last action action Coderesult myenv step action These surely correspond to the observations Position Velocity Reward isdone that MATLAB recieves Here we use MATLAB Python technique take anything complex as a cell variable for the time being Code Accept Python results in a cell for nowresult cell result Check if only Observations can be passed to MATLABObservation double result RewardReward double result isdone IsDone boolean double result Now we can convert them to variable types that can be handled in MATLAB The rest of the work will be done in MATLAB World so it will be much easier Code close the environmentmyenv close This concludes the experiment and we are ready to run reinforcement learning in MATLAB Create a custom environment wrapper classKeeping in mind what we have done so far we need to convert the environment created in Python to the environment for MATLAB so we will create a custom MATLAB environment The following link will show you how to create custom environment class Create Custom MATLAB Environment from Template when you runCode Display rlCreateEnvTemplate MountainCar v a template for MountainCar v environment class is generated This is the starting point Apply the aforementioned technique take anything complex as a cell variable for the time being to the template and define MountainCar v m as follows click for MountainCar v classCodeclassdef MountainCar v lt rl env MATLABEnvironment MOUNTAINCAR V Template for defining custom environment in MATLAB Properties set properties attributes accordingly properties open env py gym make MountainCar v end properties Initialize system state x dx dt end properties Access protected Initialize internal flag to indicate episode termination IsDone false end Necessary Methods methods Contructor method creates an instance of the environment Change class name and constructor name accordingly function this MountainCar v Initialize Observation settings ObservationInfo rlNumericSpec ObservationInfo Name Mountain Car States ObservationInfo Description Position x Velocity dx dt Initialize Action settings ActionInfo rlFiniteSetSpec ActionInfo Name Mountain Car Action The following line implements built in functions of RL env this this rl env MATLABEnvironment ObservationInfo ActionInfo end Apply system dynamics and simulates the environment with the given action for one step function Observation Reward IsDone LoggedSignals step this Action LoggedSignals Observation result cell this open env step int Action Observation double result ndarray gt gt MATLAB double Reward Reward double result is Done IsDone boolean double result if Observation gt Reward IsDone true end this IsDone IsDone optional use notifyEnvUpdated to signal that the environment has been updated e g to update visualization notifyEnvUpdated this end Reset environment to initial state and output initial observation function InitialObservation reset this result this open env reset InitialObservation double result optional use notifyEnvUpdated to signal that the environment has been updated e g to update visualization notifyEnvUpdated this end end Optional Methods set methods attributes accordingly methods Helper methods to create the environment end methods Access protected optional update visualization everytime the environment is updated notifyEnvUpdated is called function envUpdatedCallback this end endendThe first property member the constructor the step function and the initial value setting are all written in the familiar commands and since we have tested how to pass data in Python we should be able to do this smoothly Create an environment instance from a custom environment classNow we will create an instance from our custom environment class This will be the definition of the environment that will trained in MATLAB CodematEnv MountainCar v We wil make sure if this environment is valid In the case when a custom environment is newly defined validateEnvironment is used to checkup the custom environment CodevalidateEnvironment matEnv This functionmakes initial observations and actionssimulates the environment ofr ー stepsto check in advance if the reinforcement learning is ready to go If there are no problems then you can proceed TrainingThe following steps are carried out using the Reinforcement Learning Designer application Here is the flow Setting up trainingTrainingSimulation amp VisualizationExport Critic amp AgentSimulation using expored Critic amp Agent can be carried out within the App Setting up trainingThe environment is the matEnv created earlier and the agent is specified as follows Populate the items with DQNThe width of the Critic network The training settings should look like this TrainingClick the Run button and wait for the rest of the study to finish Simulation amp VisualizationWhen training is finished you can run the simulation from the app but in this case it will not be rendered and you will not be able to see the car in motion so exporting the model to run the manual simulation would be a good fit Export Critic amp AgentYou can export the agent or the elements of the agent export only networks for deep reinforcement learning as follows The Critic network will be transfered to the MATLAB workspace In this configuration it should be found with its name of agent criticNetwork With Ra exported network should be a DAGnetwork object but with Rb or later it should a dlnetwork object Therefore the type of the variable passed to the network in Rb has to be dlarray The following program for visualization of simulation takes this into account and works with the versions of our interest Run a simulation manually to see if the car climbs up the mountainLet us prepare the function for visualization to render OpenAi Gym This is the part where you need to do a little bit of work to make MATLAB work with Python but it s not a big deal for Qiita readers I bet since it makes reinforcement learning far easier in return EnvironmentTrained network Critic Number of simulations to runare passed to the visualization function as follows CodevisSim matEnv trainedCritic click for visSim mCodefunction visSim env net numSim Run Simulation using step method if isa net dlnetwork in case of dlnetwork dlnetFlag true end for i numSim state single env open env reset initial x dx dt if dlnetFlag dlnetwork state dlarray state BC end isDone false Break criterion steps step counts while isDone amp amp steps lt Take the best action according to state Note that the network accepts S gt Q S A action max predict net state if dlnetFlag action extractdata action end Recieve result from the environment action in result cell env open env step int action Display OpenAI Gym environment env open env render new x dx dt new state single result isDone signal isDone boolean single result stop criterion if new state gt isDone true end state new state update x dx dt if dlnetFlag dlnetwork state dlarray state BC end steps steps end env open env close Close OpenAI Gym environment endendNow you will see it is actually working SummaryWe used MATLAB s reinforcement designer App to train an agent in the OpenAI Gym environment To take advantage of Python s rendering manual simulation is required The reinforcement learning designer App makes the life much easier That has energized me to try using the environments defined in Python platform	2022-02-21 18:28:33
python	Pythonタグが付けられた新着投稿 - Qiita	Pythonコーティングテクニックメモ	https://qiita.com/lukaliao/items/93b1c751565cb82e1a72	Pythonコーティングテクニックメモ他のプログラミング言語の経験者がちょっとだけPythonの知識を学んで、コーティングを始めると漏れやすい便利なテクニックをちょちょいまとめました。	2022-02-21 18:13:46
js	JavaScriptタグが付けられた新着投稿 - Qiita	javaScript96_DOM操作	https://qiita.com/merikento/items/2910e78ef7aaf743593c	javaScriptDOM操作DOMの中に要素の子ノードを取得するには、下記つの方法があります。	2022-02-21 18:14:28
js	JavaScriptタグが付けられた新着投稿 - Qiita	Chrome によるパスワード自動入力を阻止する。	https://qiita.com/OT_Hirano/items/88aa415fc1f613a24b11	【Tips】フォームの自動補完を無効にするにはMDN自動で入力されることはなくなったけど、パスワード欄にフォーカスを当てると保存されているアカウントがずらっと【参考画像】自動入力は阻止できても…文字を入力する前なら流れで押しちゃいますよね…目のマークを付けていて可視化できるようにしていると、パスワード欄に入ってしまうと可視化できてしまいます️⃣Chromeに入力フォームがあると気付かれてはいけない🥷では、自動入力機能を阻止するためにはどうすれば良いのかChromeに入力できる状態のInput要素があると気付かれなければ阻止できます。	2022-02-21 18:10:17
Ruby	Rubyタグが付けられた新着投稿 - Qiita	ruby のキーワード引数について	https://qiita.com/gobtktk/items/c2e237f70ca218e6a010	endgreet山田太郎キーワード引数を使ったプログラム通常の方法と結果に違いはなく、つの仮引数と実引数の受け渡しをしていますが、キーワード引数の場合は、「キーワード値」の形式で引数を指定します。	2022-02-21 18:14:09
Azure	Azureタグが付けられた新着投稿 - Qiita	Azure Bastionファイル転送機能をProxy環境下で試してみた	https://qiita.com/shingo_kawahara/items/60e1f558fecd89609d05	個人的にはセキュリティの観点から、この仕様はよいなと思っていたのですが、最近ファイル転送機能がプレビューリリースされたので、Proxy環境下でも利用できるのか試してみました。	2022-02-21 18:18:26
技術ブログ	Mercari Engineering Blog	メルカリShops 注文システム反省会	https://engineering.mercari.com/blog/entry/20220220-db66c76db7/	hellip	2022-02-21 10:00:44
技術ブログ	Developers.IO	AWS再入門ブログリレー Amazon S3編	https://dev.classmethod.jp/articles/re-introduction-2022-s3/	amazons	2022-02-21 09:19:22
海外TECH	DEV Community	some useful git commands	https://dev.to/ingosteinke/git-log-p-and-other-useful-git-commands-j84	some useful git commandsSome useful git commands git loggit log shows the recent history from the current commit It might be outdated if we did not synchronize our local repository with the origin git pull or if we checked out an older commit or tag on purpose The history shows the commit hashes committer commit date and commit message git log p shows the same history plus the detailed diff of the changed files in each commit git log p mydir restricts the same command to the mydir directory Useful in a repository that includes build artifacts that we don t want to see in the diff git diffTo see the latest changes that have not been added to the upcoming commit yet use git diff If git diff does not show anything there might still be some changes already staged for commit git diff cached shows us those changes git resetgit reset unstages those changes The files are still changed and we can see the changes in git diff again git reset hard causes to undo those changes After a hard reset our changes will be gone We might still be able to undo our undo using the local undo history of our code editor We can also do a hard reset to a certain commit or branch head like git reset hard origin develop git statusWhile many commands include more or less detailed status information about our current local repository we can ask git where we are and if there are upcoming changes not yet committed git statusOn branch examplenothing to commit working tree clean	2022-02-21 09:43:17
海外TECH	DEV Community	How To Setup New Mac For Web Development | Setup Laravel On Mac | Install Laravel On Mac	https://dev.to/laravellercom/how-to-setup-new-mac-for-web-development-setup-laravel-on-mac-install-laravel-on-mac-5614	How To Setup New Mac For Web Development Setup Laravel On Mac Install Laravel On MacHi everyone In this video I walk you through how to setup your Mac for web development Setup Mac for Laravel I hope this is helpful let me know what tools you love to use that I should be using Follow me Twitter Facebook Page Instagram Github Website Playlists Laravel Roles and Permissions LARAVEL INERTIA MOVIE APP Laravel Livewire Movie App Laravel Classified Website Livewire Employees Laravel Employees Management Laravel admin panel laravel webDevelopment tutorial	2022-02-21 09:34:32
海外TECH	DEV Community	Introduction to Data Structures and Algorithms With Modern JavaScript.	https://dev.to/mwovi/introduction-to-data-structures-and-algorithms-with-modern-javascript-2ofb	Introduction to Data Structures and Algorithms With Modern JavaScript Data Structures are a specific method of arranging and storing data in computers so that we can execute more efficient operations on the data Data structures are used in a wide range of fields including Computer Science and Software Engineering Data can be retrieved and stored in a variety of ways Arrays and objects are two common JavaScript data structures that you are already familiar with In JavaScript data structures you ll get to learn how to access and change data using useful JS techniques like splice and Object keys An algorithm is a set of instructions that describe how to perform something step by step Breaking down an issue into smaller sections and carefully considering how to solve each portion using code will help you develop an effective algorithm ArraysAn array in JavaScript is an ordered list of values Each value is referred to as an element and it is identified by an index An array in JS has a couple of characteristics For starters an array can include values of many sorts You can have an array with items of the kinds number string and boolean for example Second an array s size is dynamic and grows on its own To put it another way you don t have to declare the array size in advance Initializing a JavaScript ArrayThere are two ways to make an array with JavaScript The first is to utilize the Array constructor in the following way let results new Array The results array is empty and there are no elements in it You can establish an array with an initial size if you know how many elements the array will hold as seen in the following example let results Array The elements are passed as a comma separated list to the Array constructor to create an array and initialize it with certain elements For example the following builds the scores array that has five members or numbers let scores new Array However The array literal notation is the preferred method of creating an array The square brackets are used to wrap a comma separated list of elements in the array literal form let arrayName element element element let cars honda toyota volvo The above example creates the cars array that holds string elements You use square brackets without specifying any elements to construct an empty array like in let emptyArray Basic Array operations Removing an element from an array s end Use the pop method let teams chelsea arsenal ManU Liverpool tottenham const lastElement teams pop console log lastElement Output tottenham Removing an element from the array s beginning Use the shift method let teams chelsea arsenal ManU Liverpool tottenham const firstElement teams shift console log firstElement Output chelsea Adding a new element to an array s endUse the push method let teams chelsea arsenal ManU Liverpool tottenham teams push Westham console log teams Output chelsea arsenal ManU Liverpool tottenham Westham Inserting an element at the start of an array Use the unshift method let teams arsenal ManU Liverpool tottenham teams unshift chelsea console log teams Output chelsea arsenal ManU Liverpool tottenham Westham Determine whether a value is an array Use Array isArray method console log Array isArray teams true Locating an element s index in an array Use the indexOf method let teams arsenal ManU Liverpool tottenham let index teams indexOf Liverpool console log index QueueA queue is used by Javascript to keep track of the code that needs to be executed Your printer also uses a queue to keep track of which documents are due to be printed next To choose which patient should be admitted first hospitals use a priority queuing system To put it another way there are queues everywhere The queue is a crucial data structure to understand from your local cafe to your computer s CPU and server or network A queue works with the concept of FIFO First In First Out As a result it conducts two basic operations adding elements to the queue s end and removing elements from the queue s front StackA data structure that holds a list of elements is known as a stack A stack works on the Last In First Out LIFO principle which means that the most recently added element is the first to be removed Push and pop are the two main operations that occur only at the top of a stack The push action adds an element to the top of the stack whereas the pop operation removes one from the top A stack can be used in a variety of ways For instance the most basic is to reverse a word You do this by pushing a word into the stack letter by letter and then popping the letters out The stack s other uses include text editors undo features syntax parsing function calls and expression conversion infix to post fix infix to prefix post fix to infix and prefix to infix The push and pop functions of the JavaScript Array type allow you to use an array as a stack let stack stack push console log stack stack push console log stack stack push console log stack stack push console log stack stack push console log stack Linked ListA linked list like an array is a linear data structure Unlike arrays however elements are not kept in a specific memory region or index Rather each element is its own object with a pointer or link to the next item in the list Each element often referred to as a node has two components data and a link to the next node Any suitable data type can be used	2022-02-21 09:33:11
海外TECH	DEV Community	Action mailer : a tutorial	https://dev.to/bdavidxyz/action-mailer-a-tutorial-gfd	Action mailer a tutorialArticle originally published here MotivationAction Mailer is already included in any new Rails application However in this tutorial we will take time to see how each piece of code works In development test and production mode Thus we hope to increase confidence and remove any bug fear of any newcomer to the stack PrerequisitesHere are the tools we will use in this tutorial gt ruby v ruby p you need at least version here gt bundle v Bundler version gt npm v you need at least version here gt yarn v gt psql version psql PostgreSQL let s use a production ready database locally gt redis cli ping redis is a dependency of SidekiqPONG gt foreman v Create a minimalistic empty Rails appBy default a Rails application already embeds Action Mailer but for this tutorial this is something we precisely want to build without help Rails offers a minimal option that allows the developer to get the bare minimum files for a Rails app see this article Also by default Rails offers no route no view no controller so here are the commands to create a minimal Rails app with at least one welcome page that works mkdir railsmails amp amp cd railsmails echo source gt Gemfile echo gem rails gt gt gt Gemfile bundle install bundle exec rails new force d postgresql minimal Create a default controllerecho class WelcomeController lt ApplicationController gt app controllers welcome controller rbecho end gt gt app controllers welcome controller rb Create a default routeecho Rails application routes draw do gt config routes rbecho get welcome index gt gt config routes rbecho root to welcome index gt gt config routes rbecho end gt gt config routes rb Create a default viewmkdir app views welcomeecho lt h gt This is h title lt h gt gt app views welcome index html erb Create database and schema rbbin rails db createbin rails db migrate First step require ActionMailer in the applicationOpen application rb and uncomment line with action mailer as follow inside config application rbrequire relative boot require rails Pick the frameworks you want require active model railtie require active job railtie require active record railtie require active storage engine require action controller railtie require action mailer railtie ⇐Uncomment everything else remains the same Create ApplicationMailer our base Class inside app mailers application mailer rbclass ApplicationMailer lt ActionMailer Base default from from example com layout mailer endOk Very interesting here We guess that the sender is from example by default which is not the address we want and we probably don t want it to be public anyway So a good place would be to put it inside a env file A layout is needed just like plain Rails Views Last but not least by integrating ourself this base class we are now aware of pieces of configuration that our mind would have skipped if the app was built as usual i e without the minimal flag Create classic layoutCreate app views layouts mailer html erb lt inside app views layouts mailer html erb gt lt DOCTYPE html gt lt html gt lt head gt lt meta http equiv Content Type content text html charset utf gt lt style gt Email styles need to be inline lt style gt lt head gt lt body gt lt yield gt lt body gt lt html gt Development modeIn development you don t want any real e mail to go out of the application this might be too dangerous To avoid this add the letter opener gem to your Gemfile Any email sent will then just be a file written on your local disk that will be displayed instantly in the browser once the email is sent inside Gemfilegem letter opener group developmentThen runbundle installThen configure config environments development rb by adding the following few lines inside config environments development rb config action mailer default url options host localhost port config action mailer delivery method letter opener config action mailer perform deliveries true Now make possible for the app to send an email inside app mailers hello mailer rbclass HelloMailer lt ApplicationMailer default from me example com def welcome email user params user mail to user email subject Welcome to My Awesome Site endendSide notes mail will actually deliver the email it comes from the inherited ApplicationMailer The e mail will be sent from me example com as stated in the nd lineNow create a file welcome email html erb inside app views hello mailer lt inside app views hello mailer welcome email html erb gt lt DOCTYPE html gt lt html gt lt head gt lt meta content text html charset UTF http equiv Content Type gt lt head gt lt body gt lt h gt Welcome to example com lt user name gt lt h gt lt p gt Thanks for joining and have a great day lt p gt lt body gt lt html gt Now you can send the email from anywhere in your application Let s see how inside config routes rbRails application routes draw do get welcome index route where you will send an email post welcome please send email where visitor are redirected once email has been sent get welcome email sent root to welcome index end inside app controllers welcome controller rbclass WelcomeController lt ApplicationController def index end def please send email HelloMailer with user name jane email jane example com welcome email deliver later end def email sent endendSide notes Here we use OpenStruct to mimic a Ruby Objectdeliver later allows us to send email in the background in development or test mode email will be send immediately but we need a rd party tool like Sidekiq to take care of background jobs in production see this article Now build the views lt inside app views welcome index html erb gt lt h gt This is h title lt h gt lt form with url welcome please send email path do f gt lt f submit Send e mail gt lt end gt lt inside app views welcome email sent html erb gt lt h gt We tried to send an email lt h gt lt p gt Please check the logs lt p gt Launch your local web server by running gt bin rails sThe following screen should be displayed localhost Now click the button an email should be shown in a new tab new tab Check the logs in the console Processing by WelcomeController email sent as HTML Rendering layout layouts application html erb Rendering welcome email sent html erb within layouts application ActiveJob ActionMailer MailDeliveryJob bff e e bd fa Rendered layout layouts mailer html erb Duration ms Allocations Rendered welcome email sent html erb within layouts application Duration ms Allocations Rendered layout layouts application html erb Duration ms Allocations Completed OK in ms Views ms ActiveRecord ms Allocations ActiveJob ActionMailer MailDeliveryJob bff e e bd fa HelloMailer welcome email processed outbound mail in ms ActiveJob ActionMailer MailDeliveryJob bff e e bd fa Delivered mail ee macbook pro de david home mail ms ActiveJob ActionMailer MailDeliveryJob bff e e bd fa Date Sun Feb From me example comTo jane example comMessage ID lt ee macbook pro de david home mail gt Subject Welcome to My Awesome SiteMime Version Content Type text html charset UTF Content Transfer Encoding bitGreat We re now able to send e mail in development mode Test modeNow the tricky part In test mode you don t want real e mails to be sent you also don t want e mails to be displayed in the browser like in dev mode you don t want e mails to stay forever in the job queueTo avoid all this open config environments test rb Add these lines at the bottom of the file config action mailer default url options host localhost port config action mailer delivery method test config active job queue adapter testdefault url options actual values don t really matter in test mode but be aware that in production you need to add the actual domain here in the host key Now google around to see where to put perform enqueued jobs in your test you could wrap your test around this block or simply call ActiveJob Base queue adapter perform enqueued jobs true before your test suite Then in your test all you have to do to read the body of the last received email is something like this ActionMailer Base deliveries try last try body try decoded ProductionIn production in order to send real e mail to real people you need a rd party tool like Mandrill MailChimp or PostMark The steps are as follow So subscribe to any of these rd party provider they generally have a large generous free tier and anyway sending e mail will not work at scale with free e mail provider like Gmail this is not recommended to try Install the corresponding Ruby gemFollow docs to get the API key and configure your Rails app as stated in the docsHere are the step for PostMark Warning The PostMark tutorial wants you to modify config application rb which is not a good idea the config will apply to dev and test mode Instead put the configuration inside config environments production rb That s itSending email with Rails is not complicated but you have to take care of each environments separately development test and production environments different ways to handle emails With this in mind and a slow but well understood first installation you should not encounter any problem when dealing with emails Enjoy	2022-02-21 09:11:10
金融	RSS FILE - 日本証券業協会	外国投信の運用成績一覧表	https://www.jsda.or.jp/shiryoshitsu/toukei/foreign/index.html	運用	2022-02-21 10:30:00
金融	ニッセイ基礎研究所	タイ経済：21年10-12月期の成長率は前年同期比1.9％増～経済活動の再開により再びプラス成長に、今後は観光業の回復がカギを握る	https://www.nli-research.co.jp/topics_detail1/id=70317?site=nli	タイ経済年月期の成長率は前年同期比増経済活動の再開により再びプラス成長に、今後は観光業の回復がカギを握る年月期の実質GDP成長率は前年同期比増前期同減と上昇し、市場予想同増を上回る結果となった図表。	2022-02-21 18:35:00
海外ニュース	Japan Times latest articles	The shadowy messengers delivering threats to Hong Kong civil society	https://www.japantimes.co.jp/news/2022/02/21/asia-pacific/hong-kong-civil-society-threats/	The shadowy messengers delivering threats to Hong Kong civil societyThe shuttering of many civil society groups comes after staff were subjected to a shadowy campaign of threats and intimidation by so called middlemen	2022-02-21 18:24:30
海外ニュース	Japan Times latest articles	Tokyo’s new daily COVID case count falls below 10,000 for first time since Jan. 24	https://www.japantimes.co.jp/news/2022/02/21/national/tokyo-covid-daily-cases/	Tokyo s new daily COVID case count falls below for first time since Jan By prefecture Tokyo had the highest number of COVID cases in the past week followed by Osaka Kanagawa Aichi and Saitama	2022-02-21 18:21:03
海外ニュース	Japan Times latest articles	U.S. warns that Russia may target multiple cities in Ukraine	https://www.japantimes.co.jp/news/2022/02/21/world/us-warn-ukraine-cities-target/	cities	2022-02-21 18:06:29
海外ニュース	Japan Times latest articles	Olympics making progress on gender equality, but gap remains	https://www.japantimes.co.jp/sports/2022/02/21/olympics/winter-olympics/olympics-women-gender-equality/	winter	2022-02-21 18:07:31
ニュース	BBC News - Home	Covid: Living with Covid plan will restore freedom, says Boris Johnson	https://www.bbc.co.uk/news/uk-60455943?at_medium=RSS&at_campaign=KARANGA	england	2022-02-21 09:18:48
ニュース	BBC News - Home	Storm Franklin: Flooding and evacuations prompts yellow warning	https://www.bbc.co.uk/news/uk-60452334?at_medium=RSS&at_campaign=KARANGA	warnings	2022-02-21 09:37:44
ニュース	BBC News - Home	Christopher Stalford: Stormont to pay tribute to DUP politician	https://www.bbc.co.uk/news/uk-northern-ireland-60456763?at_medium=RSS&at_campaign=KARANGA	minute	2022-02-21 09:32:59
ニュース	BBC News - Home	'It's dead in the water' - McIlroy says Johnson & DeChambeau rejecting Super League is a fatal blow	https://www.bbc.co.uk/sport/golf/60457721?at_medium=RSS&at_campaign=KARANGA	x It x s dead in the water x McIlroy says Johnson amp DeChambeau rejecting Super League is a fatal blowDustin Johnson and Bryson DeChambeau distance themselves from a Saudi backed Super League by reaffirming their commitment to the PGA Tour	2022-02-21 09:48:15
ビジネス	ダイヤモンド・オンライン - 新着記事	レイ(4317)、大幅な「増配」を発表して、配当利回り が3.1％に！ 年間配当額は1年で2倍に急増、2022年 2月期は前期比で5円増となる「1株あたり10円」に！ - 配当【増配・減配】最新ニュース！	https://diamond.jp/articles/-/297018		2022-02-21 18:50:00
北海道	北海道新聞	福岡高裁は「違憲状態」　昨年衆院選、１票の格差	https://www.hokkaido-np.co.jp/article/648299/	福岡高裁	2022-02-21 18:03:57
北海道	北海道新聞	小１担任が威圧的言動、盛岡　男子児童が不登校に	https://www.hokkaido-np.co.jp/article/648327/	教育委員会	2022-02-21 18:18:00
北海道	北海道新聞	特別支援学校高等部　５６校で２次募集　計５７２人	https://www.hokkaido-np.co.jp/article/648324/	特別支援学校	2022-02-21 18:17:00
北海道	北海道新聞	美唄市、深夜タクシーに助成金　コロナで運行減、市民の足確保	https://www.hokkaido-np.co.jp/article/648323/	運行	2022-02-21 18:15:00
北海道	北海道新聞	ウクライナ「瀬戸際」　侵攻阻止へ外交大詰め	https://www.hokkaido-np.co.jp/article/648322/	米大統領	2022-02-21 18:14:00
北海道	北海道新聞	母国で学んだ技術　地域の力に　倶知安・白木建設に勤務　洪さん、ジグミさん「長く頑張りたい」	https://www.hokkaido-np.co.jp/article/648318/	建設業者	2022-02-21 18:12:00
北海道	北海道新聞	道内調味料メーカー　生産急増、輸出好調　米中の景気回復が追い風に	https://www.hokkaido-np.co.jp/article/648317/	景気回復	2022-02-21 18:12:00
北海道	北海道新聞	日本ハムＢＰ内の分譲マンション、第１期申し込み１２５件	https://www.hokkaido-np.co.jp/article/648307/	分譲マンション	2022-02-21 18:12:31
北海道	北海道新聞	営業本部を廃止　キムラ	https://www.hokkaido-np.co.jp/article/648316/	資材	2022-02-21 18:07:00
北海道	北海道新聞	七飯町長選、４人目出馬へ	https://www.hokkaido-np.co.jp/article/648315/	道子	2022-02-21 18:05:00
IT	週刊アスキー	『ウォーザード』が初CS化！カプコンの対戦格闘ゲームを10タイトル収録した『カプコン ファイティング コレクション』が発売決定	https://weekly.ascii.jp/elem/000/004/084/4084117/	対戦ゲーム	2022-02-21 18:55:00
IT	週刊アスキー	横浜ロイヤルパークホテル含むロイヤルパークホテルズ全国17のホテルでイチオシ朝食を出品するコンテストを開催！	https://weekly.ascii.jp/elem/000/004/084/4084115/	横浜ロイヤルパークホテル	2022-02-21 18:30:00
IT	週刊アスキー	ニンニク臭注意！ローソンで最強レベルのにんにくポテトチップス 濃いよー、におうよー	https://weekly.ascii.jp/elem/000/004/084/4084131/	発売	2022-02-21 18:30:00
マーケティング	AdverTimes	松屋、顧客戦略部を強化へ　販売促進部は廃止	https://www.advertimes.com/20220221/article377456/	販売促進	2022-02-21 09:35:52