From: Gary Powell (Gary.Powell_at_[hidden])
Date: 2001-06-08 13:43:10
For a library like Lambda, "0" has a valid meaning. Lambda uses "nil" to
mark the end of a typelist of data. The only requirement is that it must be
a unique type. For Lambda we don't have a corresponding value. Hence
"nil_pointer" is not a good choice for the name. We could change it to
"nil_tuple_item" as we don't expect users of the library to have to type it.
The name "null" would be fine too.
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