正面和背面提案迭代器库 [英] front and back Proposal for iterators Library

问题描述

在C ++ 17 收到的迭代器库=HTTP：//en.cp$p$pference.com/w/cpp/iterator/size相对=nofollow> 尺寸 ，< A HREF =HTTP：//en.cp$p$pference.com/w/cpp/iterator/empty相对=nofollow> 空 和 数据 允许静态构造函数阵列表现得像个容器。

不过，我没有看到一个前或回的迭代器库，它被添加到函数在C ++ 14的其他容器：<一href=\"http://en.cp$p$pference.com/mwiki/index.php?title=Special%3ASearch&search=front&button=\" rel=\"nofollow\">http://en.cp$p$pference.com/mwiki/index.php?title=Special%3ASearch&search=front&button=

这是不是已经提出？

解决方案

的 N4017 的最初建议前 / 回。

图书馆演进工作组投票删除前 / 回：

  

难道我们希望非成员前（），后（）？

  SF F N阿SA
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[来源]

结果N4107修改为 N4155 并已被接受的sans 前 / 回。

由于16年2月18日前 / 回尚未reproposed：的https://groups.google.com/a/isocpp.org/d/topic/std-discussion/eJdDI2q1xKg/discussion

In C++17 the iterator library received size, empty, and data allowing statically constructed arrays to behave like containers.

But I don't see a front or back function in the iterator library, which was added to the other containers in C++14: http://en.cppreference.com/mwiki/index.php?title=Special%3ASearch&search=front&button=

Is this something that has been proposed?

解决方案

N4017 originally proposed front/back.

The Library Evolution Working Group voted to remove front/back:

Do we want non-member front(), back()?

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0  6 5 3 1

[Source]

As a result N4107 was revised to N4155 and has been accepted sans front/back.

As of 02/18/16 front/back have not been reproposed: https://groups.google.com/a/isocpp.org/d/topic/std-discussion/eJdDI2q1xKg/discussion

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