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Boyko Bantchev wrote:
On 11/24/05, Philippe Lhoste <PhiLho@gmx.net> wrote:...I thought it was a common term in functionnal programming. ... Well, there is no definition of that word in Wikipedia ... And searching upvalue in Google brings around 950 answers, half that if I exclude the Lua word...Googling on upvalue finds nothing in comp.lang.(functional,haskell,ml,lisp,scheme). I personally don't recall to have seen the word upvalue in texts related to these languages.
So it is me mixing up things I don't know well :-PI believe upvalues has a sense in Lua 4.0 and before, where you needed a special syntax to access local variables of upper scope. There was/is a thing with "captured (or frozen) value" with which I was never comfortable with, coming from a procedural world... I don't even know if this trick is still possible in the lexically scoped Lua.
-- Philippe Lhoste -- (near) Paris -- France -- http://Phi.Lho.free.fr -- -- -- -- -- -- -- -- -- -- -- -- -- --