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Versions: 6
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Contents
class Object #module Kernel
unless method_defined?(:instance_exec) # 1.9
module InstanceExecMethods #:nodoc:
end
include InstanceExecMethods
# Evaluate the block with the given arguments within the context of
# this object, so self is set to the method receiver.
#
# From Mauricio's http://eigenclass.org/hiki/bounded+space+instance_exec
#
# This version has been borrowed from Rails for compatibility sake.
def instance_exec(*args, &block)
begin
old_critical, Thread.critical = Thread.critical, true
n = 0
n += 1 while respond_to?(method_name = "__instance_exec#{n}")
InstanceExecMethods.module_eval { define_method(method_name, &block) }
ensure
Thread.critical = old_critical
end
begin
send(method_name, *args)
ensure
InstanceExecMethods.module_eval { remove_method(method_name) } rescue nil
end
end
# OLD VERSION
#def instance_exec(*arguments, &block)
# block.bind(self)[*arguments]
#end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems