| | | sorted-maphash | |
|
| function
| [Function] |
Purpose
Apply a function once to each of the entries in a hash
table according to the entry-key order determined by the predicate
function
Package :gbbopen-tools
Module :gbbopen-tools
Arguments and values
| function | A function designator specifying a function object of two arguments, the key and value of the hash-table entry | |
| hash-table | A hash table | |
| predicate | A function designator specifying a function object of two arguments that returns a generalized boolean | |
| key | A function designator specifying a function object
of one argument, or nil (default is nil)
|
Description
For each entry in the hash table, the function is called with two
arguments–the key and the value of that entry.
The first argument to the predicate function is the key of one entry in the hash table (or part of that key extracted by the key function, if supplied); the second argument is the key of another entry in the hash table (or part of that key extracted by the key function, if supplied). The predicate function should return true if and only if the first argument is strictly less than the second; otherwise the predicate should return false.
Example
Print a list of entries in hash-table, in ascending order of their keys
(which are strings):
(sorted-maphash
#'(lambda (key value)
(format t "~&;; key: ~s value: ~s~%" key value)
hash-table
#'string<)
The GBBopen Project
| | | sorted-maphash | |