There is no consensus for a core library, portable across Prolog systems, let alone a standard for such a library. Since SICStus Prolog 3 was first released, SICS has acquired Quintus Prolog, which has a rather rich library. For release 4, we have decided to make this asset be available to the SICStus community by providing a library that is a merger of the previous SICStus and Quintus libraries, which already overlap significantly.
The User's Manual documents the library of release 4. For the purposes of aiding code transition to release 4, the following is a list of the release 3 library modules, and their fate in release 4. See also Guide to Porting Code from Release 3.
library(logarr). Also available is a deprecated compatibility module
library(avl), reflecting the abstract data type, AVL trees, and with a modified, richer API. Also available is a deprecated compatibility module
library(codesio)in release 4. Likewise, the syllable `chars' has been renamed to `codes' in predicate names.
socket_select/7 can wait for any kind of stream, not just socket
socket_select/7 waits until one unit (character for
text streams, byte for binary streams) can be transferred.
socket_select/7 can wait for streams ready to write.
socket_select/7 does not create streams, you need to explicitly
Socket streams are binary by default.
Blocking socket operations can be interrupted on both UNIX and Windows.
library(sockets) should work with IPv6 (in addition to IPv4 and
library(file_systems). Process primitives have been redesigned and moved to a new module,
library(process). The predicates for creating temporary files,
tmpnam/1, have been removed. They used C library functionality that is broken by design and insecure. Instead, to create and open a temporary file use something like
open(temp('foo'), write, S, [if_exists(generate_unique_name)]), possibly together with
stream_property(S, file_name(Path))if you need to know the path to the generated file name.
The (little) remaining functionality is largely as in release 3.
Also available is a deprecated compatibility module
term_hash/2is not guaranteed to compute the same hash values as in release 3.
library(chr), based on the Leuven implementation.
The following is a list of library modules that are new in release 4.