>>>>> "Randal" == Randal L Schwartz <[EMAIL PROTECTED]> writes:
>>>>> "Jeff" == Jeff Pinyan <[EMAIL PROTECTED]> writes:
Jeff> A closure is an ANONYMOUS function (constructed via $x = sub {
Jeff> ... }) that contains LEXICAL variables that have been defined in
Jeff> a scope visible to the closure itself.
Randal> leave out the word ANONYMOUS there.
Randal> ANONYMOUS and CLOSURE are orthogonal.
Randal> in "BEGIN { my $x; sub foo { ... $x ... } }", foo is a CLOSURE
Randal> and is not ANONYMOUS.
In fact, a closer definition is probably:
A closure is a subroutine that would have persisted beyond the
lexical variables it uses, but instead extends the lifetime of
those variables to at least match its own.
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<[EMAIL PROTECTED]> <URL:http://www.stonehenge.com/merlyn/>
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