BasicObject
Evaluate the block with the given arguments within the context of this object, so self is set to the method receiver.
From Mauricio's eigenclass.org/hiki/bounded+space+instance_exec
This version has been borrowed from Rails for compatibility sake.
NOTE: This is not a common core extension (due to the use of thread.rb) and is not loaded automatically when using require 'facets'. However it is a core method in Ruby 1.9, so this only matters for users of Ruby 1.8.x or below.
# File lib/facets/core-uncommon/facets/kernel/instance_exec.rb, line 24 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
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