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doc: updated type_info section

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This commit is contained in:
Michele Caini
2022-04-06 09:50:42 +02:00
parent 9ac81c5219
commit 23bdbeef4e
1 changed files with 12 additions and 3 deletions
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15
docs/md/core.md
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@@ -559,14 +559,23 @@ require to enable RTTI.<br/>
Therefore, they can sometimes be even more reliable than those obtained
otherwise.
A type info object is an opaque class that is also copy and move constructible.
Objects of this class are returned by the `type_id` function template:
Its type defines a default constructible opaque class that is also copyable and
movable.<br/>
Objects of this class are generally returned by the `type_id` functions:
```cpp
// by type
auto info = entt::type_id<a_type>();
// by value
auto other = entt::type_id(42);
```
These are the information made available by a `type_info` object:
The objects thus received are nothing more than const references to instances of
`type_info` with static storage duration.<br/>
This is convenient for saving the entire object aside for the cost of a pointer.
However, nothing prevents from constructing `type_info` objects directly.<br/>
These are the information made available by this kind of objects:
* The index associated with a given type: