How does (first'') works?

Community Support
,
1

https://learninghub.kx.com/forums/topic/how-does-first-works

dict:abc!((enlist 1; enlist a);(enlist 2;enlist b);(enlist 3;enlist c))
q)(first’‘) dict
a| 1 a b| 2 b
c| 3 `c
q)(first’) dict
a| 1
b| 2
c| 3
q)

How does (first’‘) work, please? And then how would (first’‘’) work?
Thank you!

2

https://code.kx.com/q/ref/maps/#each

' operates the same as each in these cases

 

 

(first'') dict 
a| 1 `a 
b| 2 `b 
c| 3 `c 

{first each x} each dict 
a| 1 `a 
b| 2 `b 
c| 3 `c 

(first')dict 
a| 1 
b| 2 
c| 3 

first each dict 
a| 1 
b| 2 
c| 3