C++Talk.NET

Chris Jefferson · Guest

1) In 24.1.1.3, the following text is currently present.

"Note: For input iterators, a==b does not imply ++a=++b (Equality does
not guarantee the substitution property or referential transparency)."

However, when in Table 72, part of the definition of ++r is given as:

"pre: r is dereferenceable.
post: any copies of the previous value of r are no longer required
either to be dereferenceable ..."

While a==b does not imply that b is a copy of a, this statement should
perhaps still be made more clear.

2) There are no changes to intended behaviour

3) This Note should be altered to say "Note: For input iterators a==b,
when its behaviour is defined ++a==++b may still be false (Equality does
not guarantee the substitution property or referential transparency).

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