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| author | Rizwan Reza <rizwanreza@gmail.com> | 2010-06-05 04:04:49 +0430 |
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| committer | Rizwan Reza <rizwanreza@gmail.com> | 2010-06-05 04:04:49 +0430 |
| commit | e6f2102178b19ac8d49363b5fa145f22483c30ee (patch) | |
| tree | b5dff24210eb3f521087fe66a9b734165ad22967 /railties/guides/source/active_support_core_extensions.textile | |
| parent | 1535b02a9f8e0eaa3cd3182a45d2bd7855c3809c (diff) | |
| parent | 8e8cb1769f3a78c53e5b79d0ce6a08589045cfca (diff) | |
| download | rails-e6f2102178b19ac8d49363b5fa145f22483c30ee.tar.gz rails-e6f2102178b19ac8d49363b5fa145f22483c30ee.tar.bz2 rails-e6f2102178b19ac8d49363b5fa145f22483c30ee.zip | |
Merge branch 'master' of git://github.com/rails/rails
Diffstat (limited to 'railties/guides/source/active_support_core_extensions.textile')
| -rw-r--r-- | railties/guides/source/active_support_core_extensions.textile | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index de82e871a6..30b2099be4 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -1927,13 +1927,21 @@ Similarly, +from+ returns the tail from the element at the passed index on: The methods +second+, +third+, +fourth+, and +fifth+ return the corresponding element (+first+ is builtin). Thanks to social wisdom and positive constructiveness all around, +forty_two+ is also available. -You can pick a random element with +random_element+: +NOTE: Defined in +active_support/core_ext/array/access.rb+. + +h4. Random Access + +Active Support backports +sample+ from Ruby 1.9: <ruby> -shape_type = [Circle, Square, Triangle].random_element +shape_type = [Circle, Square, Triangle].sample +# => Square, for example + +shape_types = [Circle, Square, Triangle].sample(2) +# => [Triangle, Circle], for example </ruby> -NOTE: Defined in +active_support/core_ext/array/access.rb+. +NOTE: Defined in +active_support/core_ext/array/random_access.rb+. h4. Options Extraction |