January 2022
Intermediate to advanced
680 pages
11h 35m
Japanese
Content preview from プログラミングRust 第2版
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18章入出力
Doolittle：君が存在するという確たる証拠はあるかい？
爆弾20号：ふーむ。こうして考えているのだから、私は存在します。
Doolittle：それはいいね。とてもいいね。しかし、ではどうして他者が存在することがわかる？
爆弾20号：わたしのセンサでわかります。
−「Dark Star」†1
[†1] 訳注：カルト的な評価を得ている1974年の米国映画。『惑星からの物体X』のジョン・カーペンター監督作品。
Rustの標準ライブラリの入出力機能は、3つのトレイトRead、BufRead、Writeを中心に構築されている。
Readを実装した値は、バイト単位の入力メソッドを持つ。これらをreaderと呼ぶ。BufReadを実装した値を、バッファ付き readerと呼ぶ。これらは、Readのメソッドすべての他に、テキストを行単位で読むメソッドなどをサポートしている。Writeを実装した値は、バイト単位の出力と、UTF-8テキストの出力をサポートする。このような値をwriterと呼ぶ。
図18-1にこれら3つのトレイトと、readerとwriterの例を示す。
図18-1 Rustの主要な3つのI/Oトレイトと、それらを実装する重要な型
本章では、これらのトレイトとメソッドの使い方や、図中に示したreader型とwriter型を説明する。さらに、ファイルや端末やネットワークを使うためのさまざまな方法を解説する。
18.1 readerとwriter
reader ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.