Did you know ...
Search Documentation:
Predicate del_dict/4
HOME
DOWNLOAD
SWI-Prolog
Sources/building
Docker images
Add-ons
Browse GIT
DOCUMENTATION
Manual
Packages
FAQ
Command line
PlDoc
Bluffers
▶
Prolog syntax
PceEmacs
HTML generation
License
Publications
Rev 7 Extensions
TUTORIALS
Beginner
▶
Getting started
Learn Prolog Now!
Simply Logical
Debugger
Development tools
Advanced
▶
Modules
Grammars (DCGs)
clp(fd)
Printing messages
PlDoc
Web applications
▶
Web applications
Let's Encrypt!
Pengines
Semantic web
▶
ClioPatria
RDF namespaces
Graphics
▶
XPCE
GUI options
Machine learning
▶
Probabilistic Logic Programming
External collections
▶
Meta level tutorials
For packagers
▶
Linux packages
COMMUNITY
IRC
Forum & mailing list
Blog
News
Report a bug
Submit a patch
Submit an add-on
Roadmap (on GitHub)
External links
Contributing
Code of Conduct
Contributors
SWI-Prolog items
COMMERCIAL
WIKI
Login
View changes
Sandbox
Wiki help
All tags
Documentation
Reference manual
SWI-Prolog extensions
Dicts: structures with named arguments
Predicates for managing dicts
is_dict/1
is_dict/2
get_dict/3
get_dict/5
dict_create/3
dict_pairs/3
put_dict/3
put_dict/4
del_dict/4
:</2
select_dict/3
>:</2
Destructive assignment in dicts
Packages
Availability:
built-in
del_dict
(
+Key, +DictIn, ?Value, -DictOut
)
True when
Key
-
Value
is in
DictIn
and
DictOut
contains all associations of
DictIn
except for
Key
.