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.. index:: dictionaryp .. _dictionaryp/0:
.. rst-class:: right
protocol
dictionaryp
Dictionary protocol.
| Availability:
| logtalk_load(dictionaries(loader))
| Author: Paulo Moura | Version: 2:4:0 | Date: 2024-10-02
| Compilation flags:
| static
| Dependencies: | (none)
| Remarks: | (none)
| Inherited public predicates: | (none)
.. contents:: :local: :backlinks: top
Public predicates
.. index:: as_dictionary/2 .. _dictionaryp/0::as_dictionary/2:
as_dictionary/2 ^^^^^^^^^^^^^^^^^^^
Converts a list of key-value pairs to a dictionary.
| Compilation flags:
| static
| Template:
| as_dictionary(Pairs,Dictionary)
| Mode and number of proofs:
| as_dictionary(@list(pairs),-dictionary) - one
.. index:: as_list/2 .. _dictionaryp/0::as_list/2:
as_list/2 ^^^^^^^^^^^^^
Converts a dictionary to an ordered list (as per standard order) of key-value pairs.
| Compilation flags:
| static
| Template:
| as_list(Dictionary,Pairs)
| Mode and number of proofs:
| as_list(@dictionary,-list(pairs)) - one
.. index:: as_curly_bracketed/2 .. _dictionaryp/0::as_curly_bracketed/2:
as_curly_bracketed/2 ^^^^^^^^^^^^^^^^^^^^^^^^
Creates a curly-bracketed term representation of a dictionary.
| Compilation flags:
| static
| Template:
| as_curly_bracketed(Dictionary,Term)
| Mode and number of proofs:
| as_curly_bracketed(+dictionary,--term) - one
.. index:: clone/3 .. _dictionaryp/0::clone/3:
clone/3 ^^^^^^^^^^^
Clones a dictionary using the same keys but with all values unbound and returning a list of all the pairs in the new clone.
| Compilation flags:
| static
| Template:
| clone(Dictionary,Clone,ClonePairs)
| Mode and number of proofs:
| clone(+dictionary,-dictionary,-list(pairs)) - one
.. index:: clone/4 .. _dictionaryp/0::clone/4:
clone/4 ^^^^^^^^^^^
Clones a dictionary using the same keys but with all values unbound and returning the list of all pairs in the dictionary and in the clone.
| Compilation flags:
| static
| Template:
| clone(Dictionary,Pairs,Clone,ClonePairs)
| Mode and number of proofs:
| clone(+dictionary,-list(pairs),-dictionary,-list(pairs)) - one
.. index:: insert/4 .. _dictionaryp/0::insert/4:
insert/4 ^^^^^^^^^^^^
Inserts a key-value pair into a dictionary, returning the updated dictionary. When the key already exists, the associated value is updated.
| Compilation flags:
| static
| Template:
| insert(OldDictionary,Key,Value,NewDictionary)
| Mode and number of proofs:
| insert(+dictionary,+ground,@term,-dictionary) - one
.. index:: delete/4 .. _dictionaryp/0::delete/4:
delete/4 ^^^^^^^^^^^^
Deletes a matching key-value pair from a dictionary, returning the updated dictionary. Fails if it cannot find the key or if the key exists but the value does not unify.
| Compilation flags:
| static
| Template:
| delete(OldDictionary,Key,Value,NewDictionary)
| Mode and number of proofs:
| delete(+dictionary,@ground,?term,-dictionary) - zero_or_one
.. index:: update/4 .. _dictionaryp/0::update/4:
update/4 ^^^^^^^^^^^^
Updates the value associated with Key in a dictionary, returning the updated dictionary. Fails if it cannot find the key.
| Compilation flags:
| static
| Template:
| update(OldDictionary,Key,NewValue,NewDictionary)
| Mode and number of proofs:
| update(+dictionary,@ground,+term,-dictionary) - zero_or_one
.. index:: update/5 .. _dictionaryp/0::update/5:
update/5 ^^^^^^^^^^^^
Updates the value associated with a key in a dictionary, returning the updated dictionary. Fails if it cannot find the key or if the existing value does not unify.
| Compilation flags:
| static
| Template:
| update(OldDictionary,Key,OldValue,NewValue,NewDictionary)
| Mode and number of proofs:
| update(+dictionary,@ground,?term,+term,-dictionary) - zero_or_one
.. index:: update/3 .. _dictionaryp/0::update/3:
update/3 ^^^^^^^^^^^^
Updates the key-value pairs in a dictionary, returning the updated dictionary. Fails if it cannot find one of the keys.
| Compilation flags:
| static
| Template:
| update(OldDictionary,Pairs,NewDictionary)
| Mode and number of proofs:
| update(+dictionary,@list(pair),-dictionary) - zero_or_one
.. index:: empty/1 .. _dictionaryp/0::empty/1:
empty/1 ^^^^^^^^^^^
True iff the dictionary is empty.
| Compilation flags:
| static
| Template:
| empty(Dictionary)
| Mode and number of proofs:
| empty(@dictionary) - zero_or_one
.. index:: lookup/3 .. _dictionaryp/0::lookup/3:
lookup/3 ^^^^^^^^^^^^
Lookups a matching key-value pair from a dictionary. Fails if no match is found.
| Compilation flags:
| static
| Template:
| lookup(Key,Value,Dictionary)
| Mode and number of proofs:
| lookup(+ground,?term,@dictionary) - zero_or_one
| lookup(-ground,?term,@dictionary) - zero_or_more
.. index:: lookup/2 .. _dictionaryp/0::lookup/2:
lookup/2 ^^^^^^^^^^^^
Lookups all matching key-value pairs from a dictionary. Fails if it cannot find one of the keys or if a value for a key does not unify.
| Compilation flags:
| static
| Template:
| lookup(Pairs,Dictionary)
| Mode and number of proofs:
| lookup(+list(pair),@dictionary) - zero_or_one
.. index:: intersection/2 .. _dictionaryp/0::intersection/2:
intersection/2 ^^^^^^^^^^^^^^^^^^
True iff the values of the dictionaries common keys unify. Trivially true when there are no common keys.
| Compilation flags:
| static
| Template:
| intersection(Dictionary1,Dictionary2)
| Mode and number of proofs:
| intersection(+dictionary,+dictionary) - zero_or_one
.. index:: intersection/3 .. _dictionaryp/0::intersection/3:
intersection/3 ^^^^^^^^^^^^^^^^^^
Returns the (possibly empty) intersection between two dictionaries when the values of their common keys unify.
| Compilation flags:
| static
| Template:
| intersection(Dictionary1,Dictionary2,Intersection)
| Mode and number of proofs:
| intersection(+dictionary,+dictionary,-dictionary) - zero_or_one
.. index:: previous/4 .. _dictionaryp/0::previous/4:
previous/4 ^^^^^^^^^^^^^^
Returns the previous pair in a dictionary given a key. Fails if there is no previous pair.
| Compilation flags:
| static
| Template:
| previous(Dictionary,Key,Previous,Value)
| Mode and number of proofs:
| previous(+dictionary,+key,-key,-value) - zero_or_one
.. index:: next/4 .. _dictionaryp/0::next/4:
next/4 ^^^^^^^^^^
Returns the next pair in a dictionary given a key. Fails if there is no next pair.
| Compilation flags:
| static
| Template:
| next(Dictionary,Key,Next,Value)
| Mode and number of proofs:
| next(+dictionary,+key,-key,-value) - zero_or_one
.. index:: min/3 .. _dictionaryp/0::min/3:
min/3 ^^^^^^^^^
Returns the pair with the minimum key (as per standard order) in a dictionary. Fails if the dictionary is empty.
| Compilation flags:
| static
| Template:
| min(Dictionary,Key,Value)
| Mode and number of proofs:
| min(+dictionary,-key,-value) - zero_or_one
.. index:: max/3 .. _dictionaryp/0::max/3:
max/3 ^^^^^^^^^
Returns the pair with the maximum key (as per standard order) in a dictionary. Fails if the dictionary is empty.
| Compilation flags:
| static
| Template:
| max(Dictionary,Key,Value)
| Mode and number of proofs:
| max(+dictionary,-key,-value) - zero_or_one
.. index:: delete_min/4 .. _dictionaryp/0::delete_min/4:
delete_min/4 ^^^^^^^^^^^^^^^^
Deletes the pair with the minimum key (as per standard order) from a dictionary, returning the deleted pair and the updated dictionary. Fails if the dictionary is empty.
| Compilation flags:
| static
| Template:
| delete_min(OldDictionary,Key,Value,NewDictionary)
| Mode and number of proofs:
| delete_min(+dictionary,-key,-value,-dictionary) - zero_or_one
.. index:: delete_max/4 .. _dictionaryp/0::delete_max/4:
delete_max/4 ^^^^^^^^^^^^^^^^
Deletes the pair with the maximum key (as per standard order) from a dictionary, returning the deleted pair and the updated dictionary. Fails if the dictionary is empty.
| Compilation flags:
| static
| Template:
| delete_max(OldDictionary,Key,Value,NewDictionary)
| Mode and number of proofs:
| delete_max(+dictionary,-key,-value,-dictionary) - zero_or_one
.. index:: keys/2 .. _dictionaryp/0::keys/2:
keys/2 ^^^^^^^^^^
Returns a list with all the dictionary keys in ascending order (as per standard order).
| Compilation flags:
| static
| Template:
| keys(Dictionary,Keys)
| Mode and number of proofs:
| keys(@dictionary,-list) - one
.. index:: values/2 .. _dictionaryp/0::values/2:
values/2 ^^^^^^^^^^^^
Returns a list with all the dictionary values in ascending order of the keys (as per standard order).
| Compilation flags:
| static
| Template:
| values(Dictionary,Values)
| Mode and number of proofs:
| values(@dictionary,-list) - one
.. index:: map/2 .. _dictionaryp/0::map/2:
map/2 ^^^^^^^^^
Maps a closure over each dictionary key-value pair. Fails if the mapped closure attempts to modify the keys.
| Compilation flags:
| static
| Template:
| map(Closure,Dictionary)
| Meta-predicate template:
| map(1,*)
| Mode and number of proofs:
| map(@callable,+dictionary) - zero_or_more
.. index:: map/3 .. _dictionaryp/0::map/3:
map/3 ^^^^^^^^^
Maps a closure over each dictionary key-value pair, returning the new dictionary. Fails if the mapped closure attempts to modify the keys.
| Compilation flags:
| static
| Template:
| map(Closure,OldDictionary,NewDictionary)
| Meta-predicate template:
| map(2,*,*)
| Mode and number of proofs:
| map(@callable,+dictionary,-dictionary) - zero_or_more
.. index:: apply/4 .. _dictionaryp/0::apply/4:
apply/4 ^^^^^^^^^^^
Applies a closure to a specific key-value pair, returning the new dictionary. Fails if the key cannot be found or if the mapped closure attempts to modify the key.
| Compilation flags:
| static
| Template:
| apply(Closure,OldDictionary,Key,NewDictionary)
| Meta-predicate template:
| apply(2,*,*,*)
| Mode and number of proofs:
| apply(+callable,+dictionary,+key,-dictionary) - zero_or_one
.. index:: size/2 .. _dictionaryp/0::size/2:
size/2 ^^^^^^^^^^
Number of dictionary entries.
| Compilation flags:
| static
| Template:
| size(Dictionary,Size)
| Mode and number of proofs:
| size(@dictionary,?integer) - one
Protected predicates
(none)
Private predicates
(none)
Operators
(none)
.. seealso::
:ref:`avltree <avltree/0>`, :ref:`bintree <bintree/0>`, :ref:`rbtree <rbtree/0>`