Hi, (I'm sorry if this topic has already been discussed.)
one day a friend asked if Perl 5 had a REPL facility. (Read-Eval-Print-Loop). I told him it has perl -de0, which is different in that it does not preserve the lexical scope across evaluated lines. This is because eval STRING creates its own scope, in which the string is then evaluated. You can hack around this with a recursive eval(), which will eventually blow the stack. I wrote a short module to do this, but never released it. Have others done this? :) To get to the real topic: In Perl 6, the generic solution to fix this (if one wants to fix it) seems, to me, to be to add a .eval method to objects that represent scopes. I'm not sure if scopes are first class values in Perl 6. Are they? How do you get the current scope as an object? Are scopes just Code objects? On #perl6, theorbtwo wasn't sure if .eval should be a method on coderefs or blocks. Is there a difference between the two? I always hated this about Ruby; there seems to be no practical value to the separation. Also, are blocks/coderefs/scopes continuations? Should .eval be a method in Continuation? Thanks, -- wolverian
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