content/howto: mention self as a list reference

This adds an example of the aliasv2 experiment's self identifier being
used to reference a containing list.

Preview-Path: /docs/howto/try-aliasv2-experiment/
Signed-off-by: Jonathan Matthews <[email protected]>
Change-Id: I51c88a0d9a3f30c087bacb47749cb6d1db788281
Reviewed-on: https://cue.gerrithub.io/c/cue-lang/cuelang.org/+/1225870
TryBot-Result: CUEcueckoo <[email protected]>
Reviewed-by: Roger Peppe <[email protected]>

Author: jpluscplusm

content/docs/howto/try-aliasv2-experiment/en.md

@@ -177,6 +177,9 @@ e: {
 	g:      Root["-foo"] + 2
 	"-foo": "not-44"
 }
+
+// The self identifier references containing lists.
+h: [10, self[0] + 1, self[1] * 2]
 -- out --
 a:
   foo:
@@ -188,6 +191,10 @@ d: 45
 e:
   g: 46
   -foo: not-44
+h:
+  - 10
+  - 11
+  - 22
 {{{end}}}
 
 ## Conclusion

content/docs/howto/try-aliasv2-experiment/gen_cache.cue

@@ -11,7 +11,7 @@ package site
 								"1 new": "nxPfn5SpmUHekMpOyGDGcOnXNm3psvRuKQZjFTWcwtU="
 							}
 							code: {
-								"2 new": "49o/cDoGgckZtwb5VXVZHrkzxKJn/Pjg/2KeyJYQYEs="
+								"2 new": "LLv5ph8BPtnBPvtWk+P+21yRQYaRYuV1zAWzj6I9v5w="
 							}
 							multi_step: {
 								hash:       "NGD7JD5BHLDTV27R09JF6B7G7O0UC6T09J9C1TMC6C84DK2FTETG===="

hugo/content/en/docs/howto/try-aliasv2-experiment/index.md

@@ -190,6 +190,9 @@ e: {
 	g:      Root["-foo"] + 2
 	"-foo": "not-44"
 }
+
+// The self identifier references containing lists.
+h: [10, self[0] + 1, self[1] * 2]
 {{< /code-tab >}}
 {{< code-tab name="TERMINAL" language="" area="top-right" type="terminal" codetocopy="Y3VlIGV4cG9ydCBleHBlcmltZW50YWwtc3ludGF4LmN1ZSAtLW91dCB5YW1s" >}}
 $ cue export experimental-syntax.cue --out yaml
@@ -203,6 +206,10 @@ d: 45
 e:
   g: 46
   -foo: not-44
+h:
+  - 10
+  - 11
+  - 22
 {{< /code-tab >}}
 {{< /code-tabs >}}