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iterating over (nonascii) chars

From: Rustom Mody
Subject: iterating over (nonascii) chars
Date: Fri, 11 Oct 2013 07:07:21 -0700 (PDT)
User-agent: G2/1.0 
In perl-mode.el I find things like


    (modify-syntax-entry ?* "." st)
    (modify-syntax-entry ?+ "." st)
    (modify-syntax-entry ?- "." st)
    (modify-syntax-entry ?/ "." st)
    (modify-syntax-entry ?< "." st)
    (modify-syntax-entry ?= "." st)
    (modify-syntax-entry ?> "." st)


Any reason why its not written as follows?

(dolist (v (string-to-list "*+-/<=>")) 
 (modify-syntax-entry v "." st))
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