Subject: Re: comparing sequences that contain more than one of the same item
From: Robert Koberg <rob@xxxxxxxxxx>
Date: Fri, 22 Feb 2008 09:01:54 -0500
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contains(str1, str2)
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On Fri, 2008-02-22 at 13:57 +0000, Andrew Welch wrote:
> A bit of a Friday challenge...
>
> Is it possible to compare to sequences such that items in the sequence
> are consumed after the comparison?
>
> For example, I want to compare two words to see if one is a subset of the other.
>
> "farmer" and "frame"
>
> If you do:
>
> string-to-codepoints('farmer')[not(. = string-to-codepoints('frame'))]
>
> the result is empty because the two r's in farmer are both being
> compared to the single r in frame.
>
> Currently I've a got a recursive function that removes each letter
> after a match, but I'm wondering if there's a one-liner or some other
> set based approach?
>
>
> thanks
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