On Thu, Mar 23, 2006 at 08:14:03 -0800, Larry Wall wrote: > On Thu, Mar 23, 2006 at 02:27:07PM +0200, Yuval Kogman wrote: > > How else would you implement it that doesn't impact performance? > One of the main reasons for having exceptions is that they're exceptional, > and should be pessimized with respect to ordinary code. Having to > write a stack introspection routine is not that big of a hardship.
Oh, i mean without *manually* walking the stack - present some standard library function like 'caller()' but only for catching frames. This is purely a usability issue... Perhaps Perl 6 should ship with some "core" modules for development, with this general stuff in place? For example, a help() function, like Python has, things like Devel::DumpVar, Benchmark, Test::WithoutModule, a profiler, Devel::Loaded and other such introspection shortcuts, Devel::SymDump, and even yours truely's Devel::Sub::Which (which will just be a quick hack with the MOP introspection) and Devel::STDERR::Indent ;-) These tools should be useful for writing/hacking the compiler toolchain itself - that is they should operate both within a runtime, and if possible, on the intermediate representations as well. > Maybe have the debugger .wrap all CATCH blocks? That sounds nice -- Yuval Kogman <[EMAIL PROTECTED]> http://nothingmuch.woobling.org 0xEBD27418
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