From: Brian Buckley <briankbuckley@...>
Date: 2006-03-08T03:09:24+09:00
Subject: to_proc

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require 'facet/symbol/to_proc'

[[1,2], [], [1,2,3]].map(&:length)  #line 1 Blows up re undefined method
length for Fixnum?

["ab", "", "abc"].map(&:length)  #line 2 =3D> [2, 0, 3]  but this works fin=
e

Why does the first line fail by trying to call method length on Fixnum?
Shouldn't it be calling length on Array (which is defined) and thus return
[2,0,3] ?  Note the next line behaves as I'd expect, but for Strings.

What's happening?

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