open_hash_stream/3

SWI-Prolog Did You Know

Search Documentation:

Predicate open_hash_stream/3

HOME
DOWNLOAD
DOCUMENTATION
- Manual
- Packages
- FAQ
- Command line
- PlDoc
- Bluffers▶
- License
- Publications
- Rev 7 Extensions
TUTORIALS
- Beginner▶
- Advanced▶
- Web applications▶
- Semantic web▶
  - ClioPatria
  - RDF namespaces
- Graphics▶
  - XPCE
  - GUI options
- Machine learning▶
  - Probabilistic Logic Programming
- External collections▶
  - Meta level tutorials
- For packagers▶
  - Linux packages
COMMUNITY
COMMERCIAL
WIKI
- Login
- View changes
- Sandbox
- Wiki help
- All tags

Documentation
- Reference manual
- Packages
  - SWI-Prolog C-library
    - library(hash_stream): Maintain a hash on a stream
      - open_hash_stream/3
      - stream_hash/2

Availability::- use_module(library(hash_stream)).(can be autoloaded)

Source

[det]open_hash_stream(+OrgStream, -HashStream, +Options)

Open a filter stream on OrgStream that maintains a hash. The hash can be retrieved at any time using stream_hash/2. Provided options:

algorithm(+Algorithm): One of md5, sha1, sha224, sha256, sha384 or sha512. Default is sha1.
close_parent(+Bool): If true (default), closing the filter stream also closes the original (parent) stream.