| Hash and Hash Iterator Object Language Elements |
Indicates that all key and data definitions are complete.
|
rc = object.DEFINEDONE(
);
|
|
rc = object.DEFINEDONE(MEMRC:
'y');
|
-
rc
-
specifies whether the method succeeded or
failed.
A return code of zero indicates success; a non-zero
value indicates failure. If you do not supply a return code variable for the
method call and the method fails, then an appropriate error message is written
to the log.
-
object
-
specifies the name of the hash object.
- memrc:'y'
-
enables recovery from memory failure when loading a data
set into a hash object.
If a call fails because of insufficient memory to load a data set, a
nonzero return code is returned. The hash object frees the principal memory
in the underlying array. The only allowable operation after this type of
failure is deletion via the DELETE method.
When the DEFINEDONE method is called and the dataset argument tag is used with the constructor, the data
set is loaded into the hash object.
The hash object works by storing and retrieving data
based on lookup keys. The keys and data are DATA step variables, which you
use to initialize the hash object by using dot notation method calls. You
define a key by passing the key variable name to the DEFINEKEY method. You
define data by passing the data variable name to the DEFINEDATA method. When
you have defined all key and data variables, you must call the DEFINEDONE
method to complete initialization of the hash object. Keys and data consist
of any number of character or numeric DATA step variables.
For detailed information about how to use the DEFINEDONE
method, see Defining Keys and Data in
SAS Language Reference: Concepts.
Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
