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added example of hash#except, and removed extra whitespaces [ci skip]

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This commit is contained in:
Rishi Jain 2014-11-07 00:09:52 +05:30
parent 300c96ce15
commit c0357d789b
2 changed files with 11 additions and 5 deletions
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6
activesupport/lib/active_support/core_ext/hash/compact.rb
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@ -1,6 +1,6 @@
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}
@ -8,9 +8,9 @@ class Hash
def compact
self.select { |_, value| !value.nil? }
end
# Replaces current hash with non +nil+ values.
#
#
# hash = { a: true, b: false, c: nil}
# hash.compact! # => { a: true, b: false}
# hash # => { a: true, b: false}

10
activesupport/lib/active_support/core_ext/hash/except.rb
View file

@ -1,13 +1,19 @@
class Hash
# Returns a hash that includes everything but the given keys. This is useful for
# limiting a set of parameters to everything but a few known toggles:
# Returns a hash that includes everything but the given keys.
# hash = { a: true, b: false, c: nil}
# hash.except(:c) # => { a: true, b: false}
# hash # => { a: true, b: false, c: nil}
#
# This is useful for limiting a set of parameters to everything but a few known toggles:
# @person.update(params[:person].except(:admin))
def except(*keys)
dup.except!(*keys)
end
# Replaces the hash without the given keys.
# hash = { a: true, b: false, c: nil}
# hash.except!(:c) # => { a: true, b: false}
# hash # => { a: true, b: false }
def except!(*keys)
keys.each { |key| delete(key) }
self