diff options
| author | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2010-04-01 18:02:27 +0000 |
|---|---|---|
| committer | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2010-04-01 18:02:27 +0000 |
| commit | fac245828b9e354c9eeb93a029f1643031c3c62d (patch) | |
| tree | 23377f9cd8739da0096c24ded2cc671017ac9564 /lib/matrix.rb | |
| parent | 39aad8fa8364d12b5888c8ae24f3b47b7d06f99c (diff) | |
| download | ruby-fac245828b9e354c9eeb93a029f1643031c3c62d.tar.gz | |
* lib/matrix.rb: New method #empty? [ruby-core:26284]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27156 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/matrix.rb')
| -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}" |