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2cdf07f12c
Previously, you used it like this:
|r| RequestSpan(my_handler).handle(r)
But I don't see the point of the RequestSpan struct. It's just a
wrapper around the handler function. With this commit, the call
becomes:
|r| request_span(r, my_handler)
Which seems a little simpler.
At first I thought that the RequestSpan struct would allow "chaining"
other kinds of decorators like RequestSpan, so that you could do
something like this:
|r| CheckPermissions(RequestSpan(my_handler)).handle(r)
But it doesn't work like that. If each of those structs wrap a handler
*function*, it would actually look like this:
|r| CheckPermissions(|r| RequestSpan(my_handler).handle(r))).handle(r)
This commit doesn't make that kind of chaining any easier, but seems a
little more straightforward anyway.