Reply To: abs() vs abs[] for fby “while” all() vs all[]

[rocuinneagain]

<div>See these sections of docs on:</div>

• List Notation
• Bracket Notation

Order of evaluation also matters: Left-of-Right Evaluation

abs(price)=({abs max x};price)

Will run in order:

1. ({abs max x};price)
2. (price)=({abs max x};price)
   
3. abs(price)=({abs max x};price)
   

whereas:

abs[price]=({abs max x};price)

Will run in order:

1. ({abs max x};price)
2. abs[price]
3. abs[price]=({abs max x};price)

This tries to pass 2 arguments to all which only takes one argument so you get a rank error

https://code.kx.com/q/ref/all-any/#all

all[col=a;col2=b]