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author | Joshua Peek <josh@joshpeek.com> | 2009-05-29 16:06:21 -0500 |
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committer | Joshua Peek <josh@joshpeek.com> | 2009-05-29 16:06:21 -0500 |
commit | 69742ca8fa05509f7d7c5512cb6d8e002ecb3ab3 (patch) | |
tree | 044c2131cc87d21ee54027511aae2b7f2d2ae26a /activesupport/lib/active_support/core_ext/object/tap.rb | |
parent | 5f3f100ce2d689480da85abc88e5e940cf90189e (diff) | |
parent | 5ec2c7dc29b36d85b2658465b8a979deb0529d7e (diff) | |
download | rails-69742ca8fa05509f7d7c5512cb6d8e002ecb3ab3.tar.gz rails-69742ca8fa05509f7d7c5512cb6d8e002ecb3ab3.tar.bz2 rails-69742ca8fa05509f7d7c5512cb6d8e002ecb3ab3.zip |
Merge branch 'master' into active_model
Conflicts:
activemodel/lib/active_model/core.rb
activemodel/test/cases/state_machine/event_test.rb
activemodel/test/cases/state_machine/state_transition_test.rb
activerecord/lib/active_record/validations.rb
activerecord/test/cases/validations/i18n_validation_test.rb
activeresource/lib/active_resource.rb
activeresource/test/abstract_unit.rb
Diffstat (limited to 'activesupport/lib/active_support/core_ext/object/tap.rb')
-rw-r--r-- | activesupport/lib/active_support/core_ext/object/tap.rb | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/tap.rb b/activesupport/lib/active_support/core_ext/object/tap.rb new file mode 100644 index 0000000000..db7e715e2d --- /dev/null +++ b/activesupport/lib/active_support/core_ext/object/tap.rb @@ -0,0 +1,16 @@ +class Object + # Yields <code>x</code> to the block, and then returns <code>x</code>. + # The primary purpose of this method is to "tap into" a method chain, + # in order to perform operations on intermediate results within the chain. + # + # (1..10).tap { |x| puts "original: #{x.inspect}" }.to_a. + # tap { |x| puts "array: #{x.inspect}" }. + # select { |x| x%2 == 0 }. + # tap { |x| puts "evens: #{x.inspect}" }. + # map { |x| x*x }. + # tap { |x| puts "squares: #{x.inspect}" } + def tap + yield self + self + end unless Object.respond_to?(:tap) +end |