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| author | Gonçalo Silva <goncalossilva@gmail.com> | 2010-06-30 23:01:30 +0100 |
|---|---|---|
| committer | Gonçalo Silva <goncalossilva@gmail.com> | 2010-06-30 23:01:30 +0100 |
| commit | d2c633ba0bfb7baacdee89a46d7d036d24c68817 (patch) | |
| tree | 8f0974852b51597652e6ae73da26f3eb80fe878b /activesupport/lib/active_support/core_ext/array/random_access.rb | |
| parent | 92c0f17d6d2a958d3a6285b0e5408e9e0e7122e1 (diff) | |
| parent | c63cf7bf0db708fe46a929cf57649ab5a92034af (diff) | |
| download | rails-d2c633ba0bfb7baacdee89a46d7d036d24c68817.tar.gz rails-d2c633ba0bfb7baacdee89a46d7d036d24c68817.tar.bz2 rails-d2c633ba0bfb7baacdee89a46d7d036d24c68817.zip | |
Merge branch 'master' of http://github.com/rails/rails
Diffstat (limited to 'activesupport/lib/active_support/core_ext/array/random_access.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/array/random_access.rb | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/array/random_access.rb b/activesupport/lib/active_support/core_ext/array/random_access.rb index 7a4836cecd..edac7278bc 100644 --- a/activesupport/lib/active_support/core_ext/array/random_access.rb +++ b/activesupport/lib/active_support/core_ext/array/random_access.rb @@ -1,5 +1,12 @@ class Array # Backport of Array#sample based on Marc-Andre Lafortune's http://github.com/marcandre/backports/ + # Returns a random element or +n+ random elements from the array. + # If the array is empty and +n+ is nil, returns <tt>nil</tt>. if +n+ is passed, returns <tt>[]</tt>. + # + # [1,2,3,4,5,6].sample # => 4 + # [1,2,3,4,5,6].sample(3) # => [2, 4, 5] + # [].sample # => nil + # [].sample(3) # => [] def sample(n=nil) return self[Kernel.rand(size)] if n.nil? n = n.to_int |