[plt-scheme] Immutable boxes: why?

From: Luciano Ramalho (luciano at ramalho.org)
Date: Thu Jun 11 11:57:05 EDT 2009

My understanding of the box datatype was shaken when I read [1] that
there is an "immutable box" constructor:

(box-immutable v)

[1] http://docs.plt-scheme.org/reference/boxes.html

Can someone please explain what is the use of an immutable box?

Thanks in advance!


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