rb_ary_delete_at 3071 array.c            return rb_ary_delete_at(ary, NUM2LONG(pos));
rb_ary_delete_at 3143 array.c            return rb_ary_delete_at(ary, NUM2LONG(arg1));
rb_ary_delete_at  862 ext/win32ole/win32ole_event.c         rb_ary_delete_at(ary, at);
rb_ary_delete_at   79 include/ruby/intern.h VALUE rb_ary_delete_at(VALUE, long);
rb_ary_delete_at 1665 thread.c       	    rb_ary_delete_at(th->pending_interrupt_queue, i);