Return a non‐modifiable reference to the value for key, if present.
Synopsis
Declared in <ball_categorymanager_radixtree.h>
CategoryManager_RadixTree<t_VALUE>::OptValueCRef
find(std::string_view const& key) const;Description
Return an optional containing a reference to the non‐modifiable value associated with the specified key, or an empty optional if the key is not found. The returned reference remains valid until the tree is modified.
Return Value
optional reference to the value, or empty if not found
Parameters
Name |
Description |
key |
key to look up |
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