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| From: | Alex Sandro Queiroz e Silva |
| Subject: | Re: [Chicken-users] Re: tcp-read-timeout: procedure or parameter? |
| Date: | Tue, 24 Jun 2008 13:46:02 -0300 |
| User-agent: | Thunderbird 2.0.0.14 (Windows/20080421) |
Hallo, William Xu wrote:
,----[ let ] | (define tcp-read-timeout 60000)| | (let ((tcp-read-timeout #f))| body) `----So what's the extra benifits of using `parameter'?
<body> may call procedures that have a tcp-read-timeout free variable, but due to lexical scope that variable will most certainly not be bound to the one you want. For this you need dynamic scope.
-alex http://www.ventonegro.org/
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