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use a set and reject to avoid array allocations

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This commit is contained in:
Aaron Patterson 2013-11-06 14:11:37 -08:00
parent 779cd6ec61
commit c8b566d54d
1 changed files with 11 additions and 4 deletions
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15
actionpack/lib/abstract_controller/rendering.rb
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@ -55,7 +55,9 @@ module AbstractController
Mime::TEXT
end
DEFAULT_PROTECTED_INSTANCE_VARIABLES = %w(
require 'set'
DEFAULT_PROTECTED_INSTANCE_VARIABLES = Set.new %w(
@_action_name @_response_body @_formats @_prefixes @_config
@_view_context_class @_view_renderer @_lookup_context
@_routes @_db_runtime
@ -65,9 +67,10 @@ module AbstractController
# You can overwrite this configuration per controller.
# :api: public
def view_assigns
variables = instance_variables
variables -= protected_instance_variables
variables -= DEFAULT_PROTECTED_INSTANCE_VARIABLES
protected_vars = _protected_ivars
variables = instance_variables
variables.reject! { |s| protected_vars.include? s }
variables.each_with_object({}) { |name, hash|
hash[name.slice(1, name.length)] = instance_variable_get(name)
}
@ -108,5 +111,9 @@ module AbstractController
_normalize_options(options)
options
end
def _protected_ivars # :nodoc:
DEFAULT_PROTECTED_INSTANCE_VARIABLES + protected_instance_variables
end
end
end