Thread-Safe Lookup tables

Template<typename Key, TypeName Value, typename Hash = std::hash<key>>classthreadsafelookuptable{Private:    classBuckettype {Private: typedef std::p Air<key, value>Bucketvalue; typedef std::list<bucketValue>Bucketdata;        typedef typename Bucketdata::iterator Bucketiterator;        Bucketdata data;        mutable Boost::shared_mutex Mutex; Bucketiterator findentryfor (KeyConst& key)Const        {            returnstd::find_if (Data.cbegin (), Data.cend (), [&] (bucketvalueConst&Item) {returnItem.first = =key;}); }     Public: Value valuefor (KeyConst& Key, ValueConst& DefaultValue)Const{Boost::shared_lock<boost::shared_mutex>Lock(mutex); AutoConstFoundentry =findentryfor (key); return(Foundentry = = Data.cend ()? defaultvalue:foundentry->second); }        voidAddOrUpdate (KeyConst& Key, ValueConst&value) {Std::unique_lock<boost::shared_mutex>Lock(mutex); AutoConstFoundentry =findentryfor (key); if(Foundentry = =Data.cend ())            {Data.push_back ({key, value}); }            Else{foundentry->second =value; }        }        voidRemovemapping (KeyConst&key) {Std::unique_lock<boost::shared_mutex>Lock(mutex); AutoConstFoundentry =findentryfor (key); if(Foundentry! =Data.cend ())            {data.erase (foundentry);    }        }    }; Std::vector<std::unique_ptr<BucketType>>buckets;    Hash Hasher; Buckettype& Getbucket (KeyConst& key)Const{AutoConstBucketidnex = hasher (key)%buckets.size (); return*Buckets[bucketidnex]; } Public: Threadsafelookuptable (Constthreadsafelookuptable&) =Delete; Threadsafelookuptable&operator=(Constthreadsafelookuptable&) =Delete;    typedef Key KEYTYPE;    typedef Value Mappedvalue; Threadsafelookuptable (size_t numbuckets= +, HashConst& hasher_ =Hash ()): Buckets (std::vector<std::unique_ptr<BucketType>>(Numbuckets)), Hasher (hasher_) { for(size_t i =0; i < numbuckets; ++i) {Buckets[i].reset (Std::make_unique<BucketType>()); }} Value valuefor (KeyConst& Key, ValueConst&DefaultValue)    {Getbucket (key). Valuefor (key, DefaultValue); }    voidAddorupdatemapping (KeyConst& Key, ValueConst&value)    {Getbucket (key). AddOrUpdate (key, value); }    voidRemovemapping (KeyConst&key)    {Getbucket (key). removemapping (key); }};

Thread-Safe Lookup tables