SN-2611 已核对来源，附原文与上下文。
如果你把它读进内存再写出去，在内存紧张的情况下可能会失败。
If you read it into memory and write it out, it could fail in tight memory situations.
我在找类似 copyfile(const char* from, const char* to) 或 copyfile(path from, path to) 的东西，最好 Boost 里就有。如果你能帮我找到，我就更有可能动手实现它。
I'm looking for something like copyfile(const char* from, const char* to) or copyfile(path from, path to), preferably something in Boost if it has it. If you find it for me, it's more likely I'll get to implementing it.
其他参与者原话nelisky原帖 ↗至于文件拷贝，为什么要加深 boost 依赖？我就希望核心库依赖越少越好。
As for the file copy, why add to the boost dependency? I for one would love to get a core lib with very little deps.
我们需要 Boost 来做 JSON 和十来件原本依赖 wxWidgets 的事。Boost 是优秀的、可移植的库，我们不该躲着它。
We require Boost for JSON and a dozen things replacing dependencies on wxWidgets. Boost is good, portable stuff, we should not shy away from it.
