From: Dat Nguyen <thucdat@...>
Date: 2000-03-16T13:36:50-05:00
Subject: [ruby-talk:01920] Matrix inconsistent ERR

ruby> require 'matrix'
ruby> m1 = Matrix[[1,2,3],[4,5]]
Matrix[[1,2,3],[4,5]]
ruby> m2 = Matrix[[2,1],[6,8]]
Matrix[[2,1],[6,8]]
m3 = m1 * m2
#{self.name} dimension mismatch"
ERR: /Program/Ruby/matrix.rb:415:in `*': Matrix dimension mismatch
ruby> m3 = m2 * m1
ERR: /Program/Ruby/matrix.rb:424:in `*': nil can't be coerced into Fixnum

Question: Why the error messages are different?

Dat


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