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# 第7回 2023/2/11(土) ## 読んだところ ### From 2.5.3 (p75) ### To この章の理解度チェック 5問目まで (p82) ## 練習問題 ### 2章の理解度チェック #### 1. インスタンス変数とローカル変数の違い インスタンス変数はインスタンス固有のデータを参照する変数 クラス内のメソッドで参照できる ローカル変数は定義されたメソッドの中だけで参照 #### 2. 文字列と変数の表現方法の違い クォートあるなし #### 3. 配列とハッシュの記述方法 - <配列> - []使う、 値はカンマ区切り - <ハッシュ> - `{}`使う、key-valueのくみ, カンマ区切り ## 学んだこと(分かったこと/わからなかったこと) - eatplaynap - Human#handshakeメソッドでは引数のインスタンスにnameが定義されていることを要求している。言語化できないけど違和感を感じる(nameがないインスタンスが引数で渡されたらNoMethodErrorが出るのだろうから問題ないんだろうけど…) - Paru - `irb -r`は、requireを指定しながらirbを起動 - `attr_accessor`はインスタンス変数から@を除いた名前のインスタンスメソッド、インスタンス変数の内容を参照できるようになる - @nameというインスタンス変数の内容が、attr_accessorを使うとnameメソッドとして使えるようになる!便利!! - `another_person`,`other_people`を使い分ける - HackMDに嫌われていることがwakatta!、、naotta!! - haruguchi - otherは複数の時に使う! an + otherでanotherと覚える!なるほど〜! - `initialize(aaa)`で著者がRubyの復習を早く終わらせたかったことが伺える(名推理) - sugieさんのテンションが朝でも昼でも変わらない、すごい - 朝型人間なのでw haruguchiさんも是非(sugie) - karlley - `irb -r` で読み込みと起動を行える - `ctrl + r` でコマンドのヒストリー検索を行える - オブジェクト指向っぽい言葉(attr_accesser)が出てきたら理解が追いつかなることが多くなる... - genny - irb ないで `load {相対パス}` を打つとそのファイルを読み込んでくれる - `irb -r {相対パス}` で起動するとファイルを読み込んで起動してくれる - - `ctl + r` で履歴検索(最近のバージョンじゃないと動かない?) - hiromisugie - `attr_accessor`メソッドの理解がフワーっとしている - Paruさんのコメントを受けて、今はフワーっとしてるけど長い目で身につけていきたい - hashとかもドライバでいざ書くとなると「どう書くんだっけ」となる ## 感想(輪読会自体の改善点などあれば) - eatplaynap - 色々口出してしまったけど、皆さんの学習の妨げになっている行動があったら遠慮せずご指摘ください!! - 全くないです!むしろありがたいと思ってます!(genny) - 卒業生の方がいると安心感があるので助かります! - karlley - 進行難しい...スムーズに進めれるようになれていくしかなさそう。 - 予習をしておいた方がスムーズに進めれそうな気がしてきた。 - 予習なしでその都度聞いた方が学びが多そう。 - 復習の方が大事! - hiromisugie - たくさん参加してくれて大変嬉しい&楽しい - 「毎週土日必ず」 というのを見直すのは良いと思います、1日だけ平日に振り分けるとか? - 明日は家族で出かけるため欠席orラジオになります🙇‍♂️(雪が心配) - genny - 今日も参加者が多くてうれC! - haruguchiさん理解度チェックの回答まとめありがとうございます:bow: :+1: - やっぱりhackmdに回答書いて行ったほうが良さそう - haruguchi - 崩れに崩れた生活リズムを取り戻しにきた  - 明日は諸般の事情で行けないですが、頑張ってください、布団の中で応援してます! - Paru - 久しぶりの輪読会参加、とっても楽しかったです! - 5時起き、いけるかもしれない!定着させたいです。 - こちらの欄もMarkdownできない。。haruguchiさんのをコピーしてきたらできた! - なんか下の方でスペースとタブ切り替えられますね - Paru - お、入門を許されたようで、何もしなくてもMarkdownで表示されるようになりました。yatta!

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