# Method#to\_proc$B$HB?CM(B

**URL:** <https://www.ruby-forum.com/t/method-to-proc-b-hb-cm-b/107158>\
**Category:** Development\
**Created:** [June 18, 2007, 6:13pm UTC](https://www.ruby-forum.com/t/method-to-proc-b-hb-cm-b/107158 "2007-06-18T18:13:34Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Masahiro\_SSSSSBSr0](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/d9b06d/32.png) [@Masahiro\_SSSSSBSr0](https://www.ruby-forum.com/u/Masahiro_SSSSSBSr0)\
**Post date:** [June 18, 2007, 6:13pm UTC](https://www.ruby-forum.com/t/method-to-proc-b-hb-cm-b/107158/1 "2007-06-18T18:13:34Z")

</div>

e$B\<r0f$G$9!#e(B

Method#to\_proce$B$N@bL@$H$7$F!“e(B1.9e$B$Ne(Bmethod\_proc()e$B$N%=!\<%9$K$O0J2\<$N$h$&$Je(B  
e$B%3%a%s%H$,$”$j$^$9$,!"$3$l$O\<B:]$N?6$kIq$$$H$O0lCW$7$F$$$^$;$s!#e(B

```
/*
 * class Method
 * def to_proc
 * proc{|*args|
 * self.call(*args)
 * }
 * end
 * end
 */

```

e$B0J2\<$N$h$&$J%3!\<%I$r\<B9T$7$?$H$-!"e(B  
e$B%3%a%s%H$NDL$j$N\<BAu$J$i$Pe(B 1 e$B$,I=\<($5$l$k$O$:$G$9$,!"e(B  
e$B\<B:]$K$Oe(B 0 e$B$,I=\<($5$l$^$9!#e(B

def m(\*args)  
p args.length  
end  
method(:m).to\_proc.call([])

---

<div class="post-metadata">

**Author:** ![Masahiro\_SSSSSBSr0](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/d9b06d/32.png) [@Masahiro\_SSSSSBSr0](https://www.ruby-forum.com/u/Masahiro_SSSSSBSr0)\
**Post date:** [June 25, 2007, 9:04pm UTC](https://www.ruby-forum.com/t/method-to-proc-b-hb-cm-b/107158/2 "2007-06-25T21:04:28Z")

</div>

e$B!!$5$5$@$G$9!#e(B

Tanaka A. wrote:

> e$B$F$-$H$&$K$$$8$C$F$\_$k$H!"$3$s$J46$8$G$7$g$&$+!#e(B

e$B!!9M$($F$\_$?$i!"$@$$$?$$;w$?$h$&$J46$8$N%3!\<%I$K$J$j$^$7$?!#e(B

> e$B$?$@!“e(BC e$B%l%Y%k$K$\*$1$k%V%m%C%/0z?tEO$7$K$D$$$F$O$^$H$b$K8!F$e(B  
> e$B$5$l$F$$$J$$$N$G!”$=$3$+$i;O$a$J$$$H!"$H$$$&46$8$,$7$^$9$,!#e(B

e$B!!$&!\<$s!"3N$+$K!#e(B

---

<div class="post-metadata">

**Author:** ![Masahiro\_SSSSSBSr0](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/d9b06d/32.png) [@Masahiro\_SSSSSBSr0](https://www.ruby-forum.com/u/Masahiro_SSSSSBSr0)\
**Post date:** [June 22, 2007, 7:59pm UTC](https://www.ruby-forum.com/t/method-to-proc-b-hb-cm-b/107158/3 "2007-06-22T19:59:16Z")

</div>

In article [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid),  
Masahiro S. (e$B\<r0f@/M5e(B) [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes:

> e$B0J2\<$N$h$&$J%3!\<%I$r\<B9T$7$?$H$-!"e(B  
> e$B%3%a%s%H$NDL$j$N\<BAu$J$i$Pe(B 1 e$B$,I=\<($5$l$k$O$:$G$9$,!"e(B  
> e$B\<B:]$K$Oe(B 0 e$B$,I=\<($5$l$^$9!#e(B
> 
> def m(\*args)  
> p args.length  
> end  
> method(:m).to\_proc.call([])

e$B$F$-$H$&$K$$$8$C$F$\_$k$H!"$3$s$J46$8$G$7$g$&$+!#e(B

e$B$?$@!“e(BC e$B%l%Y%k$K$\*$1$k%V%m%C%/0z?tEO$7$K$D$$$F$O$^$H$b$K8!F$e(B  
e$B$5$l$F$$$J$$$N$G!”$=$3$+$i;O$a$J$$$H!"$H$$$&46$8$,$7$^$9$,!#e(B

# Index: proc.c

— proc.c (e$B%j%S%8%g%se(B 12587)  
+++ proc.c (e$B:n6H%3%T!\<e(B)  
@@ -1320,6 +1320,12 @@  
}

static VALUE  
+mlambda(VALUE method)  
+{

- return rb\_funcall(Qnil, rb\_intern(“lambda”), 0);  
+}
- 

+static VALUE  
bmcall(VALUE args, VALUE method)  
{  
volatile VALUE a;  
@@ -1363,7 +1369,7 @@  
\* end  
\* end  
\*/

- proc = rb\_iterate((VALUE (\*)(VALUE))mproc, 0, bmcall, method);

- proc = rb\_iterate((VALUE (\*)(VALUE))mlambda, 0, bmcall, method);  
return proc;  
}

# Index: vm.c

— vm.c (e$B%j%S%8%g%se(B 12587)  
+++ vm.c (e$B:n6H%3%T!\<e(B)  
@@ -665,15 +665,25 @@  
NODE \*ifunc = (NODE \*) block-\>iseq;  
VALUE val;  
VALUE arg;

- rb\_proc\_t \*proc = NULL;

- if (argc == 1) {
- arg = \*argv;

- if (block-\>proc) {
- 

```
   GetProcPtr(block->proc, proc);

```

}

- else if (argc \> 1) {
- arg = rb\_ary\_new4(argc, argv);

- 
- if (proc && proc-\>is\_lambda) {
- 

```
   arg = rb_ary_new4(argc, argv);

```

}  
else {

- arg = rb\_ary\_new();

- 

```
   if (argc == 1) {

```

- 

```
       arg = *argv;

```

- 

```
   }

```

- 

```
   else if (argc > 1) {

```

- 

```
       arg = rb_ary_new4(argc, argv);

```

- 

```
   }

```

- 

```
   else {

```

- 

```
       arg = rb_ary_new();

```

- 

```
   }

```

}

push\_frame(th, 0, FRAME\_MAGIC\_IFUNC,