mf_isblank.sas File Reference

Checks whether a macro variable is empty (blank) More...

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Detailed Description

Simply performs:

%sysevalf(%superq(param)=,boolean)

Usage:

%put mf_isblank(&var);

inspiration: https://support.sas.com/resources/papers/proceedings09/022-2009.pdf

Parameters

param

VALUE to be checked

Returns

output returns 1 (if blank) else 0

Version

9.2

Definition in file mf_isblank.sas.