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BDE 2.23 Release Notes
The BDE 2.23 release branch has pushed to github.
BDE 2.23.0 introduces the open-source date and time types in the library
bdlt. This includes a series of vocabulary types for describing dates and
times (e.g., bdlt::Date, bdlt::Time, bdlt::Datetime) as well as a series
of utilities for manipulating and creating date and time values (e.g.,
bsls::SystemTime, bdlt::CurrentTime, bdlt::DateUtil).
Support for Globally Unique Identifiers
(GUIDs, version 4 per RFC 4122)
have been added to the bdlb package.
The two new components, bdlb_guid and bdlb_guidutil,
allow callers to represent and generate these unique 128-bit values.
The bslx package is a successor to bdex.
The new package also supports the BDEX concept
(i.e., one can bslx stream classes with
bdexStreamIn and bdexStreamOut methods),
and the resulting wire-formats are compatible with those from bdex.
The new package provies safer handling for versioning of streaming operators.
BDE 2.23 introduces the type bsl::reference_wrapper, and the functions
bsl::ref and bsl::cref.
These provide a partial implementation of those C++11 types.
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Now Supported: The storage of references within functors (e.g.,
bdef_Function) and containers (e.g.,bsl::vector). -
Not Yet Supported: Callable references to functors and functions.
A new component, bdlc_packedintarray provides a space efficient value-semantic array of integral values. The implementation is designed to reduce dynamic memory usage by storing its contents differently according to the magnitude of values placed within it.
BDE 2.23.0 provides an implementation of bsl::hashAppend, and by extension
bsl::hash, for bsl::pair.
The new component, bdlma_localsequentialallocator,
simplifies the creation of a stack-aligned buffered-sequential allocator.