--- !ruby/object:RDoc::RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:RDoc::Markup::Flow::P 
  :body: Returns the number of columns. Note that it is possible to construct a matrix with uneven columns (e.g. Matrix[ [1,2,3], [4,5] ]), but this is mathematically unsound. This method uses the first row to determine the result.
full_name: Matrix#column_size
is_singleton: false
name: column_size
params: ()
visibility: public
