[plt-dev] Suggestion: `with-hash'

On Mar 27, Ryan Culpepper wrote:
> 
> The docs say 'hash-ref' accepts a third value, which if a procedure
> is applied to get the default value and which otherwise is
> interpreted as the default value. That's what I meant by "the normal
> hash value/thunk convention".

I know.  A popular use case is allocating something to put in the
table.

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          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
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