1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
\DOC ran
\TYPE {ran : ('a, 'b) func -> 'b list}
This is one of a suite of operations on finite partial functions, type
{('a,'b)func}. These may sometimes be preferable to ordinary functions since
they permit more operations such as equality comparison, extraction of domain
etc. The {ran} operation returns the range of such a function, i.e. the set of
result values for the points on which it is defined.
\FAILURE
Attempts to {setify} the resulting list, so may fail if the range type does not
admit comparisons.
\EXAMPLE
{
# ran (1 |=> "1");;
val it : string list = ["1"]
# ran(itlist I [2|->4; 3|->6] undefined);;
val it : int list = [4; 6]
}
\SEEALSO
|->, |=>, apply, applyd, choose, combine, defined, dom, foldl, foldr,
graph, is_undefined, mapf, ran, tryapplyd, undefine, undefined.
\ENDDOC
|
