代表Scala中的readline循环的最佳方法? [英] Best way to represent a readline loop in Scala?

问题描述

来自C/C ++背景，我对编程的功能风格不太熟悉，因此我的所有代码都非常必要，因为在大多数情况下，我只是看不到更好的方法.

Coming from a C/C++ background, I'm not very familiar with the functional style of programming so all my code tends to be very imperative, as in most cases I just can't see a better way of doing it.

我只是想知道是否有一种方法可以使此 Scala 代码块更具有"功能"功能?

I'm just wondering if there is a way of making this block of Scala code more "functional"?

var line:String = "";
var lines:String = "";

do {
    line = reader.readLine();
    lines += line;
} while (line != null)

推荐答案

如何?

val lines = Iterator.continually(reader.readLine()).takeWhile(_ != null).mkString

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