Writing a conditional in a compact way

Question

Could I write the if condition on the same line. Is there any other way to include the equivalent of the if conditional in a more compact way ?

 (pcase grapheme
    ("dinkus"  
       (if (equal var "this")
           (insert "this")
         (insert "that"))))

Answer 1

Yes. Just make these things functions and call the functions. That's how all programming works. You put multiple lines of code in one line of code by wrapping the multiple lines of code into a function.

Answer 2

Only to show that this could be a XY-problem (TLDR: If we knew better what you want to do we could give you better help.):

If you are testing var in each of the pcase cases you could include that variable in the pcase-conditions:

(pcase (list grapheme var)
    ('("dinkus" "this")  
     "this value")  
    (`("dinkus" ,_)  
     "that value"))

Disclaimer: I actually wanted to write this text as a comment. But, that comment turned out to be unreadable because of the missing newlines in the code. So I ended up writing an answer. But, maybe it is even acceptable as one of the possible answers.