Create an empty cache with custom hash and equality functors.
Declared in <bdlcc_cache.h>
Cache(
CacheEvictionPolicy::Enum evictionPolicy,
std::size_t lowWatermark,
std::size_t highWatermark,
HASH const& hashFunction,
EQUAL const& equalFunction,
bslma::Allocator* basicAllocator = 0);Create an empty cache using the specified evictionPolicy, lowWatermark, and highWatermark. The specified hashFunction is used to generate the hash values for a given key, and the specified equalFunction is used to determine whether two keys have the same value. Optionally specify the basicAllocator used to supply memory. If basicAllocator is 0, the currently installed default allocator is used. The behavior is undefined unless `lowWatermark <= highWatermark, 1 <= lowWatermark, and 1 <= highWatermark`.
| Name | Description |
|---|---|
| evictionPolicy | policy used to select items for eviction |
| lowWatermark | size at which eviction stops |
| highWatermark | size at which eviction starts after an insert |
| hashFunction | hash functor applied to keys |
| equalFunction | equality functor applied to keys |
| basicAllocator | allocator used to supply memory |