[plt-scheme] Iterating through hash table?

You need to use call/cc. Please check the classic tree matching 
<http://download.plt-scheme.org/doc/370/html/t-y-scheme/t-y-scheme-Z-H-1.html#node_toc_node_sec_13.3> 
problem at 
http://download.plt-scheme.org/doc/370/html/t-y-scheme/t-y-scheme-Z-H-15.html#node_sec_13.3.

Chongkai

Majorinc, Kazimir wrote:
> How can I iterate through hash-table and stop iterating when some 
> condition is satisfied, not waiting until hash-table-for-each run 
> through all keys in hash table?
>
> Thanks,
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