检查 C++0x 算法添加的可用性
我正在尝试找出给定实现支持对算法头的哪些添加(gcc 和 MSVC 就足够了).
I'm trying to figure out which of the additions to the algorithm headers are supported by a given implementation (gcc and MSVC would be enough).
最简单的方法是使用与核心功能相同的方法:检查编译器版本并在支持语言功能时定义宏.不幸的是，我找不到显示任一编译器版本号的列表.
The simple way would be to do it the same way as one would do it for core features: check the compiler version and define a macro if a language feature is supported. Unfortunately I cannot find a list that shows the version numbers for either compiler.
只是检查通用 C++0x 宏(GXX_EXPERIMENTAL 或 __cplusplus)就足够了，还是我应该检查编译器的更改列表并根据这些列表构建我的宏?
Is simply checking for a generic C++0x macro (GXX_EXPERIMENTAL or __cplusplus) enough or should I check the change lists for the compilers and build my macros based on those lists?
http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.200x
推荐答案
由于所有编译器供应商都提供了一个很好的列表，列出了哪些版本可用，并且无论如何您都会测试功能，所以我会使用编译器版本来检查特定功能.或者要求用户至少使用一个好的版本，而不用担心它.
Since all compiler vendors provide a nice list of what's available in what version, and you would test the functionality anyways, I would use compiler versions to check for specific features. Or demand the user uses at least a good version, and not worry about it.
__cplusplus 不一定是 C++0x 宏，它什么也不告诉你.GXX_EXPERIMENTAL 从 GCC 4.3 开始就存在了，所以这也没什么用.
__cplusplus is not necessarily a C++0x macro, it tells you nothing. GXX_EXPERIMENTAL has existed since GCC 4.3, so that's pretty useless too.
这是 GCC 的.
这个是给 MSVC 的.(请注意:部分实施意味着损坏)
This one is for MSVC. (mind you: partially implemented means broken)
这个适用于英特尔.
这里您可以找到要检查特定编译器版本的宏.
Here you can find what macros to check against for a specific version of a compiler.
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