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authorBoris Kolpackov <boris@codesynthesis.com>2011-08-04 13:29:43 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2011-08-04 13:29:43 +0200
commitf2955b7052e571eb4af0ad8194970f29e4b4ff9b (patch)
tree8b2a4e4fc37e742bd001e2fa35cfbb0c92fbe729 /build/pgsql
parent037ecbd0b2ed37880a670de33d2ac9ead53e5acb (diff)
Add support for value wrappers
Wrapper is a class that wraps another type. Examples of wrappers are various smart pointers, holders, etc. A wrapper can be transparent or it can handle the NULL semantics. The new odb::nullable class template is a NULL wrapper that helps to add the NULL semantics to a value type. New test: common/wrapper.
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