topic Re: identifying brackets using prx function in SAS Programming

identifying brackets using prx function

kalbo — Tue, 30 Aug 2022 13:27:47 GMT

Hi I would like to replace the following code with a prx function possibly prxmatch. Essentially I want to exclude any rows from a data set where a variable value has at least one bracket.

data work.&ds.;
set work.&ds.;
if index(&var.,"{")=0
and index(&var.,"}")=0
and index(&var.,"[")=0
and index(&var.,"]")=0
and index(&var.,"(")=0
and index(&var.,")")=0;
run;

Re: identifying brackets using prx function

Tom — Tue, 30 Aug 2022 13:34:10 GMT

No need for regular expressions. Just use INDEXC() function and you can search for any list of individual characters, including the parentheses and brackets in your code. Note that SAS boolean operators treats zero (and missing) as FALSE and any other number as TRUE.

So you can just use this simple, clear expression:

if not indexc(&var.,"(){}[]") ;