topic Re: printout of Hash Object variable in the SAS log in SAS Programming

printout of Hash Object variable in the SAS log

yabwon — Thu, 10 Apr 2025 14:25:42 GMT

Hi SAS-C!

I have a favour to ask.

Could you be so kind and run the following snippet in your SAS and share the log output?

%put &sysvlong.;
data _null_;
  declare hash H;
  H = _new_ hash();
  put _all_;
run;

I'm trying to figure out at what "M" SAS stopped to print out hash object variable and its value in the log.

I know form @hashman it was printable in 9.4M4. I've checked, it was "visible" in older versions too.

I did tests on M7:

1          %put &sysvlong.;
9.04.01M7P080620
2          data _null_;
3            declare hash H;
4            H = _new_ hash();
5            put _all_;
6          run;

_ERROR_=0 _N_=1
NOTE: DATA statement used (Total process time):
      real time           0.00 seconds
      cpu time            0.00 seconds

and M8:

1    %put &sysvlong.;
9.04.01M8P011823
2    data _null_;
3      declare hash H;
4      H = _new_ hash();
5      put _all_;
6    run;

_ERROR_=0 _N_=1
NOTE: DATA statement used (Total process time):
      real time           0.01 seconds
      user cpu time       0.00 seconds
      system cpu time     0.01 seconds
      memory              364.87k
      OS Memory           29952.00k

also on Workbench for Learners:

1    %put &sysvlong.;
V.04.00M0P020625
2    data _null_;
3      declare hash H;
4      H = _new_ hash();
5      put _all_;
6    run;

_ERROR_=0 _N_=1
NOTE: DATA statement used (Total process time):
      real time           0.00 seconds
      user cpu time       0.00 seconds
      system cpu time     0.00 seconds
      memory              442.12k
      OS Memory           16740.00k

and Viya for Learners:

1    %put &sysvlong.;
V.04.00M0P091624
2    data _null_;
3      declare hash H;
4      H = _new_ hash();
5      put _all_;
6    run;
_ERROR_=0 _N_=1
NOTE: DATA statement used (Total process time):
      real time           0.00 seconds
      cpu time            0.00 seconds

Interesting is that on EG8 data step debugger, under SAS9.4M8, hash object variable is "visible":

It looks that also with SAS Studio (on VFL) we can see it, but in contrary to EG, Studio "fails" to proceed:

Thank in advance!

Bart

Re: printout of Hash Object variable in the SAS log

Tom — Thu, 10 Apr 2025 14:35:55 GMT

The most obvious reason is the hash objects are not included in the list of variables when you use the _ALL_ shortcut in the PUT statement.

But there is a good reason why they aren't included. What the heck would it write to the LOG?

30    data _null_;
31    declare hash H;
32    H = _new_ hash();
33    put _all_;
34     put h=;
ERROR: Invalid operation for object type.
35   run;

NOTE: The SAS System stopped processing this step because of errors.

Re: printout of Hash Object variable in the SAS log

yabwon — Thu, 10 Apr 2025 14:54:03 GMT

In older versions, you can see something like this:

1  data _null_;
2    declare hash H;
3    H = _new_ hash();
4    put _all_;
5  run;

H=5.6817E-299 _ERROR_=0 _N_=1
NOTE: DATA statement used (Total process time):
      real time           0.04 seconds
      cpu time            0.04 seconds

Bart

P.S. BTW, if you run:

data _null_ / PMML; /* PMML option */
  declare hash H;
  H = _new_ hash();
run;

you will see:

Symbol=H kind=? type=T_OBJECT

in the LOG:

1 data _null_ / PMML; 2 declare hash H; 3 H = _new_ hash(); 4 run; NOTE: Generating PMML. --------------- Symbol table ------------------ 21: Symbol=_THREADID_ kind=K_IDENTIFIER type=T_REAL - retain - internal 23: Symbol=_FILE_ kind=K_IDENTIFIER type=T_CHARACTER - retain - pseudovariable - internal 47: Symbol='.'n kind=K_REAL_CONSTANT type=T_REAL 49: Symbol='0'n kind=K_REAL_CONSTANT type=T_REAL 50: Symbol='1'n kind=K_REAL_CONSTANT type=T_REAL 62: Symbol=_NTHREADS_ kind=K_IDENTIFIER type=T_REAL - retain - internal 74: Symbol=H kind=? type=T_OBJECT - internal 131: Symbol=_RANKID_ kind=K_IDENTIFIER type=T_REAL - retain - internal 141: Symbol=_IORC_ kind=K_IDENTIFIER type=T_REAL - retain - internal 174: Symbol=_NRANKTHREADS_ kind=K_IDENTIFIER type=T_REAL - retain - internal 189: Symbol=_NRANKS_ kind=K_IDENTIFIER type=T_REAL - retain - internal 237: Symbol=_INFILE_ kind=K_IDENTIFIER type=T_CHARACTER - retain - pseudovariable - internal 263: Symbol='#macbig'n kind=K_REAL_CONSTANT type=T_REAL 264: Symbol='DATASTEP.HASH'n kind=K_CLASSOBJECT type=T_OBJECT - internal 270: Symbol='#macseps'n kind=K_REAL_CONSTANT type=T_REAL 278: Symbol='#macnbig'n kind=K_REAL_CONSTANT type=T_REAL 312: Symbol=_RANKTHREADID_ kind=K_IDENTIFIER type=T_REAL - retain - internal 322: Symbol='BASE.OBJECT'n kind=K_CLASSOBJECT type=T_OBJECT - internal 357: Symbol=_HOSTNAME_ kind=K_IDENTIFIER type=T_CHARACTER - retain - internal 384: Symbol=_N_ kind=K_IDENTIFIER type=T_REAL - retain - internal 443: Symbol=_ERROR_ kind=K_IDENTIFIER type=T_REAL - retain - internal 504: Symbol='V@0'n kind=? type=T_OBJECT - internal end of symbol table NOTE: Writing HTML Body file: sashtml1.htm NOTE: Finished PMML. NOTE: DATA statement used (Total process time): real time 0.34 seconds user cpu time 0.14 seconds system cpu time 0.17 seconds memory 6924.71k OS Memory 29952.00k

Re: printout of Hash Object variable in the SAS log

data_null__ — Thu, 10 Apr 2025 14:54:42 GMT

VNEXT sees the hash object.

9.04.01M8P011823
73         data _null_;
74           declare hash H;
75           H = _new_ hash();
76           put _all_;
77           length _name_ $32 type $1;
78           do until(missing(_name_));
79              call vnext(_name_,type,length);
80              put 'NOTE: ' (_all_)(=);
81              end;
82         run;

_name_=  type=  length=. _ERROR_=0 _N_=1
NOTE: _name_=H type=  length=0
NOTE: _name_=_name_ type=C length=32
NOTE: _name_=type type=C length=1
NOTE: _name_=length type=N length=8
NOTE: _name_=_ERROR_ type=N length=8
NOTE: _name_=_N_ type=N length=8
NOTE: _name_=  type=  length=0
NOTE: DATA statement used (Total process time):
      real time           0.00 seconds
      cpu time            0.00 seconds

Re: printout of Hash Object variable in the SAS log

yabwon — Thu, 10 Apr 2025 14:59:07 GMT

The VNEXT(), ha! I forgot!

@data_null__, thanks a 1e6!!

Bart