method

class_exec

v1_8_7_330 - Show latest stable - 0 notes - Class: Module

class_exec(...) public

Evaluates the given block in the context of the class/module. The method defined in the block will belong to the receiver.

class Thing
end
Thing.class_exec{
  def hello() "Hello there!" end
}
puts Thing.new.hello()

produces:

Hello there!

Show source

/*
 *  call-seq:
 *     mod.module_exec(arg...) {|var...| block }       => obj
 *     mod.class_exec(arg...) {|var...| block }        => obj
 *
 *  Evaluates the given block in the context of the class/module.
 *  The method defined in the block will belong to the receiver.
 *
 *     class Thing
 *     end
 *     Thing.class_exec{
 *       def hello() "Hello there!" end
 *     }
 *     puts Thing.new.hello()
 *
 *  <em>produces:</em>
 *
 *     Hello there!
 */

VALUE
rb_mod_module_exec(argc, argv, mod)
    int argc;
    VALUE *argv;
    VALUE mod;
{
    return yield_under(mod, mod, rb_ary_new4(argc, argv));
}

class_exec

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