[racket] empty hash tables

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Hi Pierpaolo,

On 05/30/11 10:24, Pierpaolo Bernardi wrote:
> BTW, since the topic of empty tables has been brought up: I am often
> (mildly) annoyed by the fact that make-hash takes 0 or 1 argument,
> while make-immutable-hash takes only 1 argument, forcing me to write
> (make-immutable-hash '())..
> 
> Is there a reason for this lack of simmetry?
> 
> P.

`make-immutable-hash' is for constructing immutable hashes from
association lists; `hash' is the immutable equivalent of `make-hash'.

Marijn
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