/usr/local/lib/swipl/library/pairs.pl
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  • swipl
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      • error.pl
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      • pairs.pl -- 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
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      • threadutil.pl -- Interactive thread utilities
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 pairs_keys(+Pairs, -Keys) is det
Remove the values from a list of Key-Value pairs. Same as pairs_keys_values(Pairs, Keys, _)