From: Eero Saynatkari <eero.saynatkari@...>
Date: 2006-08-29T04:52:55+09:00
Subject: Re: instance_eval, yield, C extensions

Daniel Berger wrote:
> Tilman Sauerbeck wrote:
>> ruby to expect zero arguments. So make that 0 a 1.
>> 
>> 
>>> static VALUE kernel_foo(VALUE self){
>>>    VALUE v_proc = rb_proc_new(foo_block, self); /* Also tried Qnil */
>>>    return rb_funcall(rb_cObject, rb_intern("instance_eval"), 0, v_proc);
>> 
>> Some problem here.
>> 
>> HTH,
>> Tilman
> 
> Ok, fixing that I get "can't convert Proc into String (TypeError)".

Right now that code is equivalent to

 obj.instance_eval block

Where it should be

 obj.instance_eval &block
 obj.instance_eval {some_code}
 obj.instance_eval 'some_code'

> Maybe I'm supposed to be using rb_block_proc, but I'm not entirely 
> certain how
> it works.
> 
> Thanks,
> 
> Dan


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