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comparison base/ById.h @ 1753:d954dfccd922 by-id

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author Chris Cannam
date Fri, 05 Jul 2019 16:55:20 +0100
parents 6d09d68165a4
children 0678bf772f82
comparison
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1752:6d09d68165a4 1753:d954dfccd922
29 29
30 //!!! todo: docs 30 //!!! todo: docs
31 31
32 //!!! further possibilities: 32 //!!! further possibilities:
33 // 33 //
34 // - id can only be queried when an object is added to ById (maybe
35 // add() returns the id, and there is a ById::idOf, but the
36 // object has no public getId())
37 //
38 // - get() returns a pointer wrapper that cannot be shared/copied 34 // - get() returns a pointer wrapper that cannot be shared/copied
39 // again by the caller (except by the usual C++ trickery) 35 // again by the caller (except by the usual C++ trickery)
40 // 36 //
41 // also to do: review how often we are calling getAs<...> when we 37 // also to do: review how often we are calling getAs<...> when we
42 // could just be using get 38 // could just be using get
39
40 //!!! NB we still haven't solved the problem of what to do for a
41 //!!! user-initiated cancel of a transform
43 42
44 struct IdAlloc { 43 struct IdAlloc {
45 44
46 // The value NO_ID (-1) is never allocated 45 // The value NO_ID (-1) is never allocated
47 static const int NO_ID = -1; 46 static const int NO_ID = -1;