Apache-Commons Commons-Functor 的状态
当我查看 commons-functor website 网站时，它似乎脱离了沙箱状态，但它还说没有官方二进制版本？但我想我在某个 Maven 存储库中看到过它，但现在找不到了。有谁知道状态是什么以及是否有官方二进制版本？我怀疑我只是不太擅长浏览 Commons 网站。
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看起来最后一次开发是三周前（请参阅此）和他们的“ 1.0 的发行说明”只是一个骨架（参见此处） 。
几次快速搜索显示 Apache Commons Lang 曾经有一个包 org.apache.commons.lang.functor - 但它似乎在不久前被删除了（就像 2003年左右 ）
作为旁注，Apache Commons Collections 似乎有一个包
org.apache.commons.collections。函子- 但这可能不是您正在寻找的。Looks like the last development was three weeks ago (see this) and their "release notes" for 1.0 are just a skeleton (see here).
A couple quick searches show that Apache Commons Lang used to have a package
org.apache.commons.lang.functor- but this was removed some time ago, it seems (like 2003 or so)As a side note, it appears that Apache Commons Collections has a package
org.apache.commons.collections.functors- but this might not be what you're looking for.我完全不知道这个库的发布或维护状态是什么。我很抱歉。
但我所知道的是，世界需要另一个 Java 函数式编程库，就像它需要在，呃，头上有个洞一样。臭氧层？已经有相当多的产品在流通——Functional Java、Guava、LambdaJ 等的功能部分——都在做同样的事情（或者至少有重叠的部分做同样的事情）。我们现在需要做的是开始将我们的注意力集中在其中两个或三个库上，开发使用它们的通用样式和习惯用法。
在我工作的公司，那里有很多函数式编程的忠实粉丝，我们似乎已经选择了函数式 Java，我们的代码库中有 LambdaJ、Guava 和几个自制的功能框架（并在 Scala 中重写了其中的一些部分！）。这个决定是由比我对功能风格有更深入理解的人做出的，而且是在我加入公司之前，所以我无法解释原因，只是报告它已经做出了。 Function Java 正在积极开发，并且它在 Maven 中。我强烈建议您看一下它，看看它是否满足您的需求。
I have absolutely no idea what the release or maintenance state of this library is. My apologies.
But what i do know is that the world needs another functional programming library for Java like it needs a hole in the, er, head. Ozone layer? There are already quite a number in circulation - Functional Java, the functional parts of Guava, LambdaJ, and others - all doing much the same thing (or at least having overlapping bits doing much the same thing). What we need to do now is to start coalescing our attention around two or three of these libraries, developing common styles and idioms for using them.</rant>
At the company where i work, where there are a lot of big fans of functional programming, we seem to have settled on Functional Java, having had LambdaJ, Guava, and a couple of homebrewed functional frameworks in our codebase (and having rewritten bits of it in Scala!). That decision was made by people with deeper understanding of functional style than me, and before i joined the company, so i can't explain the reasoning, merely report that it was made. Functional Java is actively developed, and it's in Maven. I would urge you to have a look at it, and see if it meets your needs.
Commons Functor 即将首次正式发布。您可以使用 Apache 存储库中的夜间快照来尝试一下：
https://repository.apache.org/content/groups/snapshots/org/apache/commons/commons-functor/1.0-SNAPSHOT/
Commons Functor is heading toward it's first official release. You can give it a try by using the nightly snapshot from the Apache repository:
https://repository.apache.org/content/groups/snapshots/org/apache/commons/commons-functor/1.0-SNAPSHOT/