At 05:01 21/3/01 +0100, Stefan Bodewig wrote: >> select isFile(*) from toolkit >> do >> Compile subdir/source to subdir/classes >> Jar subdir/classes to subdir/subdir.jar >> done >> >> Which is declarative ;) > >And now, please, could anybody tell me the difference between those >two? Is it that foreach is a keyword in Perl while select is one in >SQL?
select has zero ordering semantics. Besides low coupling being a general design goal it also has the effect that easy to compose multiple levels (ie easy to understand and embedd multiple selects). Cheers, Pete *-----------------------------------------------------* | "Faced with the choice between changing one's mind, | | and proving that there is no need to do so - almost | | everyone gets busy on the proof." | | - John Kenneth Galbraith | *-----------------------------------------------------*
