Re: Possible GHashTable bug?

[Darin Adler <darin bentspoon com>]

On Thursday, July 5, 2001, at 05:31  AM, Havoc Pennington wrote:

> Derek Simkowiak <dereks realloc net> writes:
> > 	Ooh, ouch; I take this means I also cannot *add* elements while
> > within g_hash_table_foreach().  That may be a showstopper for me.  How 
> > can
> > player1 fire a rocket (resulting in a new entity --the rocket-- for the
> > hash) if I can't add entities in the iteration of my main loop?  I guess
> > I'll need a queue or something for post-foreach additions and removals.
> >
> > 	Anyway, thanks for the help.  It would be cool if there were an
> > Iterator for the GHashTable (g_hash_table_next() or some such) that would
> > still allow you to add/remove elements between calls.
>
> The usual solution is to flatten the hash into a list, then iterate
> over that.

For an example of how to do this, you can look at 
eel_g_hash_table_safe_for_each. 
<http://cvs.gnome.org/lxr/ident?i=eel_g_hash_table_safe_for_each>. While I 
don't like the name I chose that much, I occasionally find it handy to 
have a version of g_hash_table_foreach that flattens into lists and then 
uses the lists, allowing the hash table to change during the iteration. It'
s used 3 places in Nautilus.

    -- Darin