Contents

NEURLFilterPrefilter

A structure containing a prefilter returned by a filter control provider.

Declaration

struct NEURLFilterPrefilter

Overview

You return this type from the fetchPrefilter(existingPrefilterTag:) method of NEURLFilterControlProvider. The returned NEURLFilterPrefilter must contain a Bloom filter built with the 32-bit FNV-1a and 32-bit MurmurHash3 hash functions, with double hashing. Depending on the size of the Bloom filter data, it can be passed as data or the path of a file containing the data.

Topics

Creating a prefilter

Working with prefilter properties

See Also

Fetching a prefilter