[inetknght]

This is not functionally different from operator<< which std::cout has taught us is a neat trick but generally a bad idea.

[senderista]

Unlike the iostreams shift operators, the ranges pipe operator isn't stateful.

[jjmarr]

There's state when you try to use the final result, though. It's not threadsafe due to caching.

https://www.youtube.com/watch?v=c1gfbbE2zts