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-rw-r--r--activesupport/lib/active_support/cache.rb4
-rw-r--r--activesupport/lib/active_support/core_ext/hash/compact.rb13
-rw-r--r--activesupport/test/core_ext/hash_ext_test.rb8
3 files changed, 18 insertions, 7 deletions
diff --git a/activesupport/lib/active_support/cache.rb b/activesupport/lib/active_support/cache.rb
index bc114e0785..179ca13b49 100644
--- a/activesupport/lib/active_support/cache.rb
+++ b/activesupport/lib/active_support/cache.rb
@@ -250,14 +250,14 @@ module ActiveSupport
# sleep 60
#
# Thread.new do
- # val_1 = cache.fetch('foo', race_condition_ttl: 10) do
+ # val_1 = cache.fetch('foo', race_condition_ttl: 10.seconds) do
# sleep 1
# 'new value 1'
# end
# end
#
# Thread.new do
- # val_2 = cache.fetch('foo', race_condition_ttl: 10) do
+ # val_2 = cache.fetch('foo', race_condition_ttl: 10.seconds) do
# 'new value 2'
# end
# end
diff --git a/activesupport/lib/active_support/core_ext/hash/compact.rb b/activesupport/lib/active_support/core_ext/hash/compact.rb
index 62ea579c65..f072530e04 100644
--- a/activesupport/lib/active_support/core_ext/hash/compact.rb
+++ b/activesupport/lib/active_support/core_ext/hash/compact.rb
@@ -2,18 +2,21 @@ class Hash
# Returns a hash with non +nil+ values.
#
# hash = { a: true, b: false, c: nil }
- # hash.compact # => { a: true, b: false }
- # hash # => { a: true, b: false, c: nil }
- # { c: nil }.compact # => {}
+ # hash.compact # => { a: true, b: false }
+ # hash # => { a: true, b: false, c: nil }
+ # { c: nil }.compact # => {}
+ # { c: true }.compact # => { c: true }
def compact
self.select { |_, value| !value.nil? }
end
# Replaces current hash with non +nil+ values.
+ # Returns nil if no changes were made, otherwise returns the hash.
#
# hash = { a: true, b: false, c: nil }
- # hash.compact! # => { a: true, b: false }
- # hash # => { a: true, b: false }
+ # hash.compact! # => { a: true, b: false }
+ # hash # => { a: true, b: false }
+ # { c: true }.compact! # => nil
def compact!
self.reject! { |_, value| value.nil? }
end
diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index f0a4c4dddc..e70680c773 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -999,6 +999,10 @@ class HashExtTest < ActiveSupport::TestCase
h = hash_with_only_nil_values.dup
assert_equal({}, h.compact)
assert_equal(hash_with_only_nil_values, h)
+
+ h = @symbols.dup
+ assert_equal(@symbols, h.compact)
+ assert_equal(@symbols, h)
end
def test_compact!
@@ -1012,6 +1016,10 @@ class HashExtTest < ActiveSupport::TestCase
h = hash_with_only_nil_values.dup
assert_equal({}, h.compact!)
assert_equal({}, h)
+
+ h = @symbols.dup
+ assert_equal(nil, h.compact!)
+ assert_equal(@symbols, h)
end
def test_new_with_to_hash_conversion