http://d.puremagic.com/issues/show_bug.cgi?id=5057
Summary: std.variant.Algebraic-aware GC
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: P2
Component: druntime
AssignedTo: s...@invisibleduck.org
ReportedBy: bearophile_h...@eml.cc
--- Comment #0 from bearophile_h...@eml.cc 2010-10-15 05:08:20 PDT ---
D has unions, and sometimes normal C-style unions are useful. But in many
situations when you have a union you also keep a tag that represents the type.
So in many of those situations you may use the tagged union of Phobos,
std.variant.Algebraic.
If std.variant.Algebraic implementation is good enough (currently it's
unfinished and not good enough yet) and its usage becomes a common D idiom when
a simple tagged union is necessary, then the D GC may be aware of it, and it
may read and use the tag of the Algebraic to know at runtime what the type is.
This may improves the GC precision a little.
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