man.postnix Miscellaneous man pages of Plan 9 related material

     DICT(2)                                                   DICT(2)

     NAME
          dict - list of string pairs

     SYNOPSIS
          include "dict.m";
          dict := load Dictionary Dictionary->PATH;

          Dict: adt {
               add: fn(d: self ref Dict, e: (string, string));
               delete: fn(d: self ref Dict, k: string);
               lookup: fn(d: self ref Dict, k: string): string;
               keys: fn(d: self ref Dict): list of string;
          };

     DESCRIPTION
          Dict provides a simple string to string association list:

          d.add(e)
               Adds a new tuple e to the list, representing a new (key
               , value) pair.

          d.delete(k)
               Deletes all pairs with key k from the list.

          d.lookup(k)
               Tries to find a pair with key k and returns its associ-
               ated value, or nil if the key was not found.

          d.keys()
               Returns a list of all keys in the list.

     SOURCE
          /appl/lib/dict.b

     SEE ALSO
          hash(2)

     BUGS
          No attempt is made to keep keys unique in the list; if more
          than one pair exists with the same key, then lookup will
          select one of them arbitrarily.

          Computational overhead of lookup and deletion of keys is
          proportional to the number of pairs in the list.

     Page 1                       Plan 9            (printed 10/29/25)