cancel
Showing results for
Did you mean:

## May I please know how the over iterator is being used here?

New Contributor II

Which form of iterator is being used here? Thank you!

You can use the `over` iterator with `ssr` to replace multiple items.

(ssr/)["results_%div_%dept.csv"; ("%div";"%dept"); ("banking";"m&a")]

1 ACCEPTED SOLUTION
Valued Contributor

https://code.kx.com/q/ref/accumulators/#ternary-values

You can use a sample to see how it progresses:

``````({-1 .Q.s1 `x`y`z!(x;y;z);x+y+z}/)[0;1 2 3;4 5 6]
`x`y`z!0 1 4
`x`y`z!5 2 5
`x`y`z!12 3 6
21``````

And on the `ssr` example:

``````({-1 .Q.s1 `x`y`z!(x;y;z);ssr[x;y;z]}/)["results_%div_%dept.csv"; ("%div";"%dept"); ("banking";"m&a")]
`x`y`z!("results_%div_%dept.csv";"%div";"banking")
`x`y`z!("results_banking_%dept.csv";"%dept";"m&a")
"results_banking_m&a.csv"``````

3 REPLIES 3
Valued Contributor

https://code.kx.com/q/ref/accumulators/#ternary-values

You can use a sample to see how it progresses:

``````({-1 .Q.s1 `x`y`z!(x;y;z);x+y+z}/)[0;1 2 3;4 5 6]
`x`y`z!0 1 4
`x`y`z!5 2 5
`x`y`z!12 3 6
21``````

And on the `ssr` example:

``````({-1 .Q.s1 `x`y`z!(x;y;z);ssr[x;y;z]}/)["results_%div_%dept.csv"; ("%div";"%dept"); ("banking";"m&a")]
`x`y`z!("results_%div_%dept.csv";"%div";"banking")
`x`y`z!("results_banking_%dept.csv";"%dept";"m&a")
"results_banking_m&a.csv"``````

New Contributor II

Thank you very much! May I ask where is the documentation on "-1" used here?

New Contributor III

Handles to files and processes | Basics | q and kdb+ documentation - Kdb+ and q documentation (kx.co...

1 means send to stdout

-1 means send to stdout, then append a newline character