diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | proc.c | 13 |
2 files changed, 17 insertions, 1 deletions
@@ -140,6 +140,11 @@ Sat Sep 6 06:05:09 2008 Yukihiro Matsumoto <matz@ruby-lang.org> a patch from Tadashi Saito <shiba at mail2.accsnet.ne.jp> in [ruby-dev:36102]. +Sat Sep 6 04:44:06 2008 Yukihiro Matsumoto <matz@ruby-lang.org> + + * proc.c (Init_Proc): add '===' operator to use procs in when + clause of the case statement. inspired by <http://www.aimred.com/news/developers/2008/08/14/unlocking_the_power_of_case_equality_proc/>. + Sat Sep 6 03:18:17 2008 Tanaka Akira <akr@fsij.org> * transcode.c (allocate_converted_string): add arguments for a buffer @@ -466,12 +466,14 @@ proc_lambda(void) * call-seq: * prc.call(params,...) => obj * prc[params,...] => obj + * prc.(params,...) => obj * * Invokes the block, setting the block's parameters to the values in * <i>params</i> using something close to method calling semantics. * Generates a warning if multiple values are passed to a proc that * expects just one (previously this silently converted the parameters - * to an array). + * to an array). Note that prc.() invokes prc.call() with the parameters + * given. It's a syntax sugar to hide "call". * * For procs created using <code>Kernel.proc</code>, generates an * error if the wrong number of parameters @@ -494,6 +496,14 @@ proc_lambda(void) * from prog.rb:5 */ +/* + * call-seq: + * prc === obj => obj + * + * Invokes the block, with <i>obj</i> as the block's parameter. It is + * to allow a proc object to be a target of when clause in the case statement. + */ + static VALUE proc_call(int argc, VALUE *argv, VALUE procval) { @@ -1745,6 +1755,7 @@ Init_Proc(void) rb_define_singleton_method(rb_cProc, "new", rb_proc_s_new, -1); rb_define_method(rb_cProc, "call", proc_call, -1); rb_define_method(rb_cProc, "[]", proc_call, -1); + rb_define_method(rb_cProc, "===", proc_call, -1); rb_define_method(rb_cProc, "yield", proc_call, -1); rb_define_method(rb_cProc, "to_proc", proc_to_proc, 0); rb_define_method(rb_cProc, "arity", proc_arity, 0); |