将`IntStream`打印为`String`的最简单方法 [英] Simplest way to print an `IntStream` as a `String`
问题描述
使用Java-8,我可以轻松地将 String
(或任何 CharSequence
)视为 IntStream
使用 chars
或 codePoints
方法。
IntStream chars =Hello world。。codePoints();
然后我可以操纵流的内容
IntStream stars = chars.map(c - > c ==''?'':'*');
我一直在寻找一种打印结果的整洁方式,我甚至找不到简单的方法。如何将这个 int
的流放回一个可以打印的表单,就像我可以 String
。 / p>
从以上明星
我希望打印
***** ******
String result =Hello world。
.codePoints()
//。parallel()//为大字符串取消注释这一行
.map(c - > c ==''?'':'*')
.collect(StringBuilder :: new,
StringBuilder :: appendCodePoint,StringBuilder :: append)
.toString();
但是,Hello world。。replaceAll([^] ,*)
更简单。并非一切都受益于lambdas。
With Java-8 I can easily treat a String
(or any CharSequence
) as an IntStream
using either the chars
or the codePoints
method.
IntStream chars = "Hello world.".codePoints();
I can then manipulate the contents of the stream
IntStream stars = chars.map(c -> c == ' ' ? ' ': '*');
I have been hunting for a tidy way to print the results and I cant even find a simple way. How do I put this stream of int
s back into a form that can be printed like I can a String
.
From the above stars
I hope to print
***** ******
String result = "Hello world."
.codePoints()
//.parallel() // uncomment this line for large strings
.map(c -> c == ' ' ? ' ': '*')
.collect(StringBuilder::new,
StringBuilder::appendCodePoint, StringBuilder::append)
.toString();
But still, "Hello world.".replaceAll("[^ ]", "*")
is simpler. Not everything benefits from lambdas.
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