Some functions I could not rewrite using core

[Francois Berenger]

On Monday, November 12, 2012 4:38:14 PM UTC+9, David House wrote:
>
> hashtbl_of is called of_alist or of_alist_exn. (Note that because this 
> is a creator function, you have to either use Foo.Table.of_alist, or 
> Hashtbl.Poly.of_alist -- see my email last week.) 
>

I think I will tap into Caml.Hashtbl.
I have too much code relying on them that I don't have the courage to port
today.


> I don't think we have a function that does reverse_binding (I can't 
> recall ever needing it). But you should be able to write it using the 
> other functions in Hashtbl. What precisely are you struggling with? 
>

Something not very interesting to troubleshoot.
Also, I don't have the courage today so Caml.Hashtbl will save me. ;)
 

>
> On Mon, Nov 12, 2012 at 5:49 AM, Francois Berenger 
> <francois.ber... at gmail.com <javascript:>> wrote: 
> > Hello, 
> > 
> > I'm stuck with these (standard OCaml code I'd like t 
> > make core-compatible, or know the equivalent functions 
> > in Core): 
> > 
> > module A   = Array 
> > module F   = Filename 
> > module HT  = Hashtbl 
> > module L   = List 
> > module Mar = Marshal 
> > module P   = Printf 
> > module RNG = Random 
> > module S   = String 
> > 
> > (* create a Hashtbl from a list of key-value pairs *) 
> > let hashtbl_of key_value_pairs = 
> >   let res = HT.create (L.length key_value_pairs) in 
> >   L.iter 
> >     (fun (k, v) -> HT.add res k v) 
> >     key_value_pairs; 
> >   res 
> > 
> > (* transform a Hashtbl of key->value into a Hashtbl of value->key *) 
> > let reverse_binding ht = 
> >   let res = HT.create (HT.length ht) in 
> >   HT.iter 
> >     (fun k v -> HT.add res v k) 
> >     ht; 
> >   res 
> > 
> > Thanks, 
> > F. 
> > 
>
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