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Predicate pairs_keys/2
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The SWI-Prolog library
library(pairs): Operations on key-value lists
pairs_keys_values/3
pairs_values/2
pairs_keys/2
group_pairs_by_key/2
transpose_pairs/2
map_list_to_pairs/3
Packages
Availability:
:- use_module(
library(pairs)
).
(can be autoloaded)
[det]
pairs_keys
(
+Pairs, -Keys
)
Remove the values from a list of Key-Value pairs. Same as
pairs_keys_values(Pairs, Keys, _)