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Fix typo.

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Gareth Rees 2013-03-08 18:09:24 +00:00
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mps/manual/source/guide/advanced.rst
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@ -485,10 +485,10 @@ Weak hash tables
----------------
A :term:`weak-key hash table` has :term:`weak references (1)` to its
keys. If the key dies, the value corresponding that key is automatically
deleted from the table too. Similarly, a :term:`weak-value hash table`
has weak references to its values, and a :term:`doubly weak hash table`
has weak references to both.
keys. If the key dies, the value corresponding to that key is
automatically deleted from the table too. Similarly, a
:term:`weak-value hash table` has weak references to its values, and a
:term:`doubly weak hash table` has weak references to both.
In this section, I'll describe how to add all three types of weak hash
table to the toy Scheme interpreter. This requires a few far-reaching