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added example to Hash#symbolize_keys

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This commit is contained in:
Francesco Rodriguez 2012-05-13 12:49:15 -05:00
parent 817f9e64ee
commit 92dbdb2340
1 changed files with 5 additions and 2 deletions
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7
activesupport/lib/active_support/core_ext/hash/keys.rb
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@ -1,7 +1,7 @@
class Hash
# Return a new hash with all keys converted to strings.
#
# { :name => 'Rob', :years => '28' }.stringify_keys
# { name: 'Rob', years: '28' }.stringify_keys
# #=> { "name" => "Rob", "years" => "28" }
def stringify_keys
result = {}
@ -22,6 +22,9 @@ def stringify_keys!
# Return a new hash with all keys converted to symbols, as long as
# they respond to +to_sym+.
#
# { 'name' => 'Rob', 'years' => '28' }.symbolize_keys
# #=> { :name => "Rob", :years => "28" }
def symbolize_keys
result = {}
keys.each do |key|
@ -32,7 +35,7 @@ def symbolize_keys
alias_method :to_options, :symbolize_keys
# Destructively convert all keys to symbols, as long as they respond
# to +to_sym+.
# to +to_sym+. Same as +symbolize_keys+, but modifies self.
def symbolize_keys!
keys.each do |key|
self[(key.to_sym rescue key)] = delete(key)