Return the longest matching key prefix with an associated value.
Synopsis
Declared in <ball_categorymanager_radixtree.h>
std::string_view
findLongestCommonPrefix(
OptValueRef* value,
std::string_view const& key);Description
Return the longest prefix of the specified key that has an associated value in this tree, or an empty string view if no such prefix exists. If the optionally specified value is not null, load into *value a reference to the value associated with the returned prefix. Note that an empty return value can mean either that no matching prefix exists, or that the empty string itself is the longest matching prefix (when the tree contains a value for the empty key). Also note that the returned reference (if set) remains valid until the tree is modified.
Return Value
longest matching prefix, or an empty string view if none
Parameters
Name |
Description |
value |
optional out‐parameter for the matched value |
key |
key whose longest matching prefix is sought |
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