[ruby-dev:34780] Re: (1..5).step(SimpleDelegator.new(1.5)) {|x| p x} differ from (1..5).step(1.5) {|x| p x}

なかだです。

At Wed, 21 May 2008 00:37:24 +0900,
Tanaka Akira wrote in [ruby-dev:34775]:
> 以下のように (1..5).step(1.5) {|x| p x} と
> (1..5).step(SimpleDelegator.new(1.5)) {|x| p x} の結果が異な
> るのは変ではないでしょうか。

やはり、Float#to_intは廃止することを主張します。


Index: numeric.c
===================================================================
--- numeric.c	(revision 16501)
+++ numeric.c	(working copy)
@@ -454,18 +454,4 @@ num_nonzero_p(VALUE num)
 }
 
-/*
- *  call-seq:
- *     num.to_int    => integer
- *
- *  Invokes the child class's <code>to_i</code> method to convert
- *  <i>num</i> to an integer.
- */
-
-static VALUE
-num_to_int(VALUE num)
-{
-    return rb_funcall(num, id_to_i, 0, 0);
-}
-
 
 /********************************************************************
@@ -3116,5 +3102,4 @@ Init_Numeric(void)
     rb_define_method(rb_cNumeric, "remainder", num_remainder, 1);
     rb_define_method(rb_cNumeric, "abs", num_abs, 0);
-    rb_define_method(rb_cNumeric, "to_int", num_to_int, 0);
 
     rb_define_method(rb_cNumeric, "scalar?", num_scalar_p, 0);
@@ -3247,5 +3232,4 @@ Init_Numeric(void)
 
     rb_define_method(rb_cFloat, "to_i", flo_truncate, 0);
-    rb_define_method(rb_cFloat, "to_int", flo_truncate, 0);
     rb_define_method(rb_cFloat, "floor", flo_floor, 0);
     rb_define_method(rb_cFloat, "ceil", flo_ceil, 0);
Index: range.c
===================================================================
--- range.c	(revision 16501)
+++ range.c	(working copy)
@@ -307,6 +307,7 @@ range_step(int argc, VALUE *argv, VALUE 
     else {
 	rb_scan_args(argc, argv, "01", &step);
-	if (!rb_obj_is_kind_of(step, rb_cNumeric)) {
-	    step = rb_to_int(step);
+	tmp = rb_check_to_integer(step, "to_int");
+	if (!NIL_P(tmp)) {
+	    step = tmp;
 	}
 	if (rb_funcall(step, '<', 1, INT2FIX(0))) {
Index: lib/delegate.rb
===================================================================
--- lib/delegate.rb	(revision 16501)
+++ lib/delegate.rb	(working copy)
@@ -153,7 +153,7 @@ class Delegator
     # call through \_\_getobj\_\_.
     # 
-    def respond_to?(m)
+    def respond_to?(m, *priv)
       return true if super
-      return self.__getobj__.respond_to?(m)
+      return self.__getobj__.respond_to?(m, *priv)
     end
 


-- 
--- 僕の前にBugはない。
--- 僕の後ろにBugはできる。
    中田 伸悦