如何从float []获取流

问题描述

当我注意到一些奇怪的东西时，我正在学习如何使用java 8流。

I was learning how to use java 8 streams when I noticed something weird.

Arrays.stream（）除浮点数组之外的所有方法都有：

Arrays.stream() has methods for everything but float arrays :

• Arrays.stream（int []）：IntStream


• Arrays.stream（long []）：LongStream


• Arrays.stream（double []）：DoubleStream

• Arrays.stream(int[]) : IntStream
• Arrays.stream(long[]) : LongStream
• Arrays.stream(double[]) : DoubleStream

同样，有流int，double等实现但不是浮点数：

Similarly, there are Stream implementations for int, double etc but not floats :

• IntStream


• LongStream


• DoubleStream

• IntStream
• LongStream
• DoubleStream

这有什么理由吗？

使用浮动流的推荐方法是什么？

what is the recommended way to work with float streams?

推荐答案

来自 Java SE 8 for the Really Impatient by Cay S. Horstmann：

from Java SE 8 for the Really Impatient by Cay S. Horstmann :

...如果要存储short，char，byte和boolean，请使用
IntStream，对于float，使用DoubleStream 。图书馆设计师
认为不值得添加另外五种流类型。

... If you want to store short, char, byte, and boolean, use an IntStream, and for float, use a DoubleStream. The library designers didn’t think it was worth adding another five stream types.

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