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[REBOL] Re: Block vs List

From: rotenca:telvia:it at: 19-Jun-2004 20:32

Hi Patrik,
> Is there a command that can be used on a block and cannot be used on a > list?
All action! which can work with block! can work also with list! and hash!. But there are many native! and function! which are different: 1) set l: make list! [1 2] b: make block! [1 2] set [a b] b print [a b] set [a b] l print [a b] 2) list! and hash! cannot be filled with code to execute. Every command which requires a block to be executed does not accept a list! or an hash!. Functions that require a block! for some parameters and do not accept a series are many dozens. --- Ciao Romano