On 17 ao?t, 11:16, Eric Hodel <drbr... / segment7.net> wrote:

>
> > but how to retrieve them ???
>
> Use rb_hash_aset and rb_hash_aref from hash.c.  Jump down to the
> Init_Hash() to get a list of what you can do.


it's OK now for hash keys being strings NOT symbol, i did'nt found a
way to produce a Ruby symbol (as :verbose) from C.

thought i've seen ID2SYM and SYM2ID in ruby.h


also not all of the rb_xxx methods found in hash.c are working from C,
surprisingly ????

for example :

~/work/C/Cext2Ruby/SYMBOL_TEST/ext%> ruby sample.rb
dyld: NSLinkModule() error
dyld: Symbol not found: _rb_hash_keys
  Referenced from: ./symbol_test.bundle
  Expected in: flat namespace

~/work/C/Cext2Ruby/SYMBOL_TEST/ext%> ruby sample.rb
dyld: NSLinkModule() error
dyld: Symbol not found: _rb_hash_size
  Referenced from: ./symbol_test.bundle
  Expected in: flat namespace

the Symbol for "rb_hash_keys" or "rb_hash_size" aren't found in my
bundle ???