thanks for the clarification .. I did know about the fact that I have to
capture the return value .. but some how slipped my mind and assumed it was
a bug .. I guess that will never happen again after burning my fingers this
time ....

Sunil.

On Thu, Jan 6, 2011 at 4:30 PM, Joost <jo...@zeekat.nl> wrote:

> Joost wrote:
> > you're supposed to use assoc! and
> > friends as if they're pure functions.
>
> Just correcting myself for clarity:
>
> assoc! etc MAY modify their transient arguments, but not always, and
> not always in the way you might think. The correct result of these
> operations is their return value, but they are not pure functions
> since you also - obviously - cannot rely on the transient arguments to
> remain unchanged.
>
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