| TECH |
Techable（テッカブル） |
高さ方向の音場も再現！ ヤマハ、 サウンドバー「SR-B20A」を発売 |
https://techable.jp/archives/153437
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高さ |
2021-04-25 00:00:54 |
| Program |
[全てのタグ]の新着質問一覧｜teratail（テラテイル） |
JavaScript シーザー暗号化 |
https://teratail.com/questions/335038?rss=all
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2021-04-25 09:55:06 |
| Program |
[全てのタグ]の新着質問一覧｜teratail（テラテイル） |
c言語のデータ型のshort, long, floatについて |
https://teratail.com/questions/335037?rss=all
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double |
2021-04-25 09:45:40 |
| Program |
[全てのタグ]の新着質問一覧｜teratail（テラテイル） |
Excel VBAで改行コードがLFでセル内に改行が含まれるCSVファイルをインポートしたい |
https://teratail.com/questions/335036?rss=all
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ExcelVBAで改行コードがLFでセル内に改行が含まれるCSVファイルをインポートしたいやりたいこと以下のCSVファイルをVBAでExcelにインポートしたい。 |
2021-04-25 09:45:27 |
| Program |
[全てのタグ]の新着質問一覧｜teratail（テラテイル） |
Socket.ioを用いたランダムマッチングを行うチャットアプリの作成方法 |
https://teratail.com/questions/335035?rss=all
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Socketioを用いたランダムマッチングを行うチャットアプリの作成方法前提・実現したいことsocketioを用いて対で自動的にランダムでチャットができるシステムを作りたいと考えております以下のコードqueueの仕組みを使い、ランダムでチャットを実現しておりますが、ユーザがdisconnectの時の際はqueueが残ったままになってしまうことが考えられますdisconnectの際はqueueから、socketを削除してしまおうと考えております別のユーザがconnectしたと同時にdisconnectしたユーザがいたとしたら、不整合が起きてしまうのではないかと考えております。 |
2021-04-25 09:32:37 |
| Program |
[全てのタグ]の新着質問一覧｜teratail（テラテイル） |
error: unreported exception IOException; must be caught or declared to be thrown エラー解決できない |
https://teratail.com/questions/335034?rss=all
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errorunreportedexceptionIOExceptionmustbecaughtordeclaredtobethrownエラー解決できないimportjavaioimportjavautilclassShowItemDetailprivateListltItemgtitemListpublicShowItemDetailArrayListltItemgtitemListthisitemListitemListpublicvoidShowItemDetailArrayListltItemgtitemListSystemoutprintln表示する商品コードを入力してください。 |
2021-04-25 09:02:46 |
| Ruby |
Rubyタグが付けられた新着投稿 - Qiita |
【Ruby】暗号生成(password generator)プログラムを作ってみた |
https://qiita.com/redrabbit1104/items/9b0c82cc1a9718c4256c
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作業手順①やりたいことをまず文章で書くアルゴリズム②細かな問題の記述③文章を元にフローチャートを書く④プログラムを書く大きな流れアルファベットを用意する記号を用意する数字を用意する結果を表示させるもう一度やり直すかプログラムを終了するか選ばせる細かな作業ampロジックランダムに生成された文字列、数字、記号をくっ付けた結果は文字列、数字、記号の順になっているため、ランダムに混ぜてあげる必要がある上記の結果物をランダムに混ぜるには配列にする必要がある配列にした上でshuffle関数を使ってランダムにする配列になっている結果物は文字列に戻すjoin関数を使うフローチャート暗号を生成する関数を作成文字列と数字、記号が入っている配列を用意します。 |
2021-04-25 09:29:39 |
| 海外TECH |
DEV Community |
Ruby 101: Strings |
https://dev.to/ericchapman/ruby-101-strings-2l0n
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Ruby StringsI develop in Javascript Python PHP and Ruby By far Ruby is my favorite programming language Together let start a journey and revisit our Ruby foundations You want to learn Ruby or your Ruby is a bit rusty In this series we will start from the beginning and will learn every aspect of Ruby one step at a time Each post will include some theory but also exercise and solution If you have any questions comments or your are new and need help you can comment below or send me a message Strings DeclarationString variable represent any text data A key point for the syntax of strings declaration is that they have to be enclosed in single or double quotes The program will throw an error if they are not wrapped inside quotation marks Badname Mike Will throw a error Goodname Mike Goodname Mike Number can also be represent as stringtext age number age The variable text age is a string variable It cannot be process in Ruby as a number like be use in addition or multiplication etc The number age variable is integer number so that variable can be part of any Ruby number manipulations methods String InterpolationString interpolation is replacing placeholders with values in a string literal For string interpolation to work String have to be wrapped inside double quotation mark Here a examplename Mike message Hello name Hello MikeIf the last code snippet the message variable will be process by Ruby before assignment The name placeholder will be replace by the containing variable value Inside placeholder any Ruby expression can be use age message Your age in years will be age Your age in years will be In Ruby everything is an object You maybe have ear this before What that mean for us the developer First what is an object An object refers to a particular instance of a class with their own methods and properties In Ruby type are define as classes so for example if you have a string variable it s an instance of the String class For example take this variablemessage Hello World This message variable will be dynamically type by Ruby as a string That string is a class So message is an instance of the class string In Ruby the String class already have many methods to help do basic and advance string manipulations That s also mean that message variable will inherits all the methods and properties of his parent class String Example of method call syntax object method name Mike puts name upcase MIKE upcase is a method of the String class This method convert all the string characters to uppercase For now if you don t understand all that class instance thing THAT S NORMAL We will cover class and object later The only thing we need to understand for now is variable like a string variable have methods we can call to do some stuff automatically Here are some string methods available in Ruby puts Mike upcase MIKEputs Mike downcase mikeputs mike capitalize Mikeputs Mike reverse ekiMname Mike Taylor puts name length Look how those methods name are self descriptive We do not need any comments and any explanation to understand what each method do Welcome to Ruby world More String methodsNow that we understand the basic we will start to learn more advance string methods The sub and gsub methodRuby have a handy string method to replace part of a string message The sky is blue puts message sub blue red The sky is redNote the method call have no parentheses to enclose parameters In Ruby those are optionals Validputs message sub blue red Also validputs message sub blue red The convention is to omit the parentheses unless the code seem clearer with them The sub method replace the first occurrence The gsub method replace all the occurrences message The sky is blue and the car is also blue puts message gsub blue red The sky is red and the car is also redStrip methodRemove white space before or after stringputs Welcome to Ruby World strip Welcome to Ruby World Chaining methodsIt is possible to chain string methodsname Mike Taylor puts name sub Mike Paul strip downcase paul taylor In that specific situation using the parentheses make the code easier to readExerciceCreate a little program that Input the user name and store the result in a variableInput the user password and store the result in a variableRemove password before or after white spaceConvert the password to lowercaseDisplay user name and password but replace the password letter e with a starHere are the resultEnter user name MikeEnter user password secretThe user name is Mike and his password is s cr tSolutionprint Enter user name name gets chompprint Enter user password password gets chomp strip downcaseputs The user name is name and his password is password gsub e ConclusionThat s it for today The journey just started stay tune for the next post very soon later today or tomorrow If you have any comments or questions please do so here or send me a message on twitter I am new on twitter so if you want to make me happyFollow me Follow justericchapman |
2021-04-25 00:42:42 |
| 海外科学 |
NYT > Science |
Halting the Vast Release of Methane Is Critical for Climate, U.N. Says |
https://www.nytimes.com/2021/04/24/climate/methane-leaks-united-nations.html
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Halting the Vast Release of Methane Is Critical for Climate U N SaysA major United Nations report will declare that slashing emissions of methane the main component of natural gas is far more vital than previously thought |
2021-04-25 00:48:15 |
| ニュース |
BBC News - Home |
Iraq Covid hospital fire: At least 23 dead after 'oxygen tank explodes' |
https://www.bbc.co.uk/news/world-middle-east-56875804
|
iraqi |
2021-04-25 00:37:31 |
| 北海道 |
北海道新聞 |
大谷は４打数１安打１打点 アストロズ戦 |
https://www.hokkaido-np.co.jp/article/537150/
|
打点 |
2021-04-25 09:09:00 |
| 北海道 |
北海道新聞 |
サンプドリアの吉田はフル出場 イタリア１部リーグ |
https://www.hokkaido-np.co.jp/article/537149/
|
吉田 |
2021-04-25 09:09:00 |
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