diff options
| -rw-r--r-- | lib/matrix.rb | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/matrix.rb b/lib/matrix.rb index 25245fd15c..6227c435bf 100644 --- a/lib/matrix.rb +++ b/lib/matrix.rb @@ -387,6 +387,14 @@ class Matrix #++ # + # Returns +true+ if this is an empty matrix, i.e. if the number of rows + # or the number of columns is 0. + # + def empty? + column_size == 0 || row_size == 0 + end + + # # Returns +true+ if this is a regular matrix. # def regular? @@ -910,7 +918,7 @@ class Matrix # Overrides Object#to_s # def to_s - if row_size == 0 || column_size == 0 + if empty? "Matrix.empty(#{row_size}, #{column_size})" else "Matrix[" + @rows.collect{|row| @@ -923,7 +931,7 @@ class Matrix # Overrides Object#inspect # def inspect - if row_size == 0 || column_size == 0 + if empty? "Matrix.empty(#{row_size}, #{column_size})" else "Matrix#{@rows.inspect}" |