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Re: Scheme question: convert a range


From: Simon Albrecht
Subject: Re: Scheme question: convert a range
Date: Mon, 16 Nov 2015 22:11:20 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

On 16.11.2015 21:59, David Kastrup wrote:
Simon Albrecht <address@hidden> writes:

Hello,

The subject certainly seems cryptic – it’s difficult to summarize, but
an example will make it clear immediately.
I want to write a scheme procedure, which takes a pair like #'(3 . 7)
and returns a list with all the numbers in the range: #'(3 4 5 6 7)
How is this done most easily?
(let ((x '(3 . 7)))
   (iota (- (cdr x) (car x) -1) (car x)))

Nice! Thanks.

Yours, Simon



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