On Wednesday, 3 September 2014 at 22:34:30 UTC, Kevin Lamonte wrote:
Sounds like a candidate for an attribute, just prefix a function or function call with @trace(level)?

I've got a feature request in for just that: https://issues.dlang.org/show_bug.cgi?id=13406

While thinking about it I realize that it's actually very easy to generalize @trace into the equivalent of Common Lisp :before, :after, and :around methods: @scope(&scopeFn) . (It would work even better if scope(success) and scope(failure) exposed what they are returning/throwing.)

In the meantime Log4D has a (barely tested) mixin.

This can already be implemented in a library if "mixin of an implementation" idiom is used. I think it fits D style better (having attributes modify actual code flow is unprecedented)

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