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Section: 21 [containers] Status: C++11 Submitter: Alisdair Meredith Opened: 2008-09-10 Last modified: 2016-02-10
Priority: Not Prioritized
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Note in particular that Table 90 "Container Requirements" gives semantics of a.swap(b) as swap(a,b), yet for all containers we define swap(a,b) to call a.swap(b) - a circular definition.
[ San Francisco: ]
Robert to propose a resolution along the lines of "Postcondition: "a = b, b = a" This will be a little tricky for the hash containers, since they don't have operator==.
[ Post Summit Anthony Williams provided proposed wording. ]
[ 2009-07 Frankfurt ]
Moved to Ready with minor edits (which have been made).
In table 80 in section 21.2.1 [container.requirements.general], replace the postcondition of a.swap(b) with the following:
Table 80 -- Container requirements Expression Return type Operational semantics Assertion/note pre-/post-conidtion Complexity ... ... ... ... ... a.swap(b); void swap(a,b) (Note A)
Remove the reference to swap from the paragraph following the table.
Notes: the algorithms
swap(),equal() and lexicographical_compare() are defined in Clause 25. ...