# Syntax struggles with remap()
**URL:** https://uzu.lurk.org/t/syntax-struggles-with-remap/5982
**Category:** Strudel
**Tags:** questions
**Created:** [26 October 2025 11:06 UTC](https://uzu.lurk.org/t/syntax-struggles-with-remap/5982 "2025-10-26T11:06:43Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@firolightfog](https://uzu.lurk.org/u/firolightfog)
#### Post date: [26 October 2025 11:06 UTC](https://uzu.lurk.org/t/syntax-struggles-with-remap/5982/1 "2025-10-26T11:06:43Z")
I think I fatally misunderstand something with the syntax. Why doesn't remap() simply transform the n() to "4 5 9 4 5"?
```javascript
let remap = register('remap', (mapping, x) => {return mapping[x]})
s("fmpiano")
.euclid(11,16)
.n("1 2 3 1 2".remap("0459000000"))
// .n("1 2 3 1 2").remap("0459000000")
.scale("C:minor")
```
I also thought of solving the issue without registering but no luck:
```javascript
s("fmpiano")
.euclid(11,16)
.n("1 2 3 1 2"
.when("1", x => x.add("0459000000"[x]).sub(x))
)
.scale("C:minor")
```
---
### Author:  [@firolightfog](https://uzu.lurk.org/u/firolightfog)
#### Post date: [27 October 2025 09:07 UTC](https://uzu.lurk.org/t/syntax-struggles-with-remap/5982/2 "2025-10-27T09:07:01Z")
Probably I make it more complicated than I should.
Maybe this one?
```javascript
// this doesn't seem to work
s("fmpiano")
.euclid(11,16)
.n("1 2 3 1 2".pick("0 4 5 9"))
.scale("C:minor")
```
```javascript
// this does work but I want to type less
s("fmpiano")
.euclid(11,16)
.n("1 2 3 1 2".pick(["0","4","5","9"]))
.scale("C:minor")
```
---
### Author:  [@firolightfog](https://uzu.lurk.org/u/firolightfog)
#### Post date: [28 October 2025 10:32 UTC](https://uzu.lurk.org/t/syntax-struggles-with-remap/5982/3 "2025-10-28T10:32:26Z")
OK, I think maybe I found the solution.
```javascript
s("fmpiano")
.euclid(11,16)
.n("1 2 3 1 2".pick(map("0 4 5 9")))
.scale("C:minor")
```
---
### Author:  [@firolightfog](https://uzu.lurk.org/u/firolightfog)
#### Post date: [28 October 2025 11:48 UTC](https://uzu.lurk.org/t/syntax-struggles-with-remap/5982/4 "2025-10-28T11:48:19Z")
The solution delivered by froos on Discord seems to be working just fine.
```javascript
let yoko = register('yoko',(patt)=>patt.queryArc(0,1).map(h=>h.value))
setcpm(66/4)
s("fmpiano")
.euclid(11,16)
.n("1 2 3 1 2".pick("0 2 5 9".yoko()))
.scale("C:minor")
```