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[REBOL] Re: GPS: minimizing sum of squares algorithm

From: g:santilli:tiscalinet:it at: 11-Nov-2002 11:31

Hi Jan, On Sunday, November 10, 2002, 9:14:54 PM, you wrote: JS> Few things have bitten me though. I am still not used JS> to certain "in-place" behaviour of certain functions, such JS> as 'replace, or worst of all 'reverse, which returns empty JS> block. This bites badly in pipelines of expressions. I don't know why REVERSE returns the tail of the block. You can use HEAD REVERSE in expressions, or patch it like this: use [_reverse] [ _reverse: :reverse reverse: func [ "Reverses a series." value [series! tuple! pair!] /part "Limits to a given length or position." range [integer! series!] ] [ head either part [_reverse/part value range] [_reverse value] ] ] Regards, Gabriele. -- Gabriele Santilli <[g--santilli--tiscalinet--it]> -- REBOL Programmer Amigan -- AGI L'Aquila -- REB: