github.com/joomcode/cue@v0.4.4-0.20221111115225-539fe3512047/doc/tutorial/basics/6_expressions/50_fieldcomp.txt (about) 1 cue eval -c fieldcomp.cue 2 cmp stdout expect-stdout-cue 3 4 -- frontmatter.toml -- 5 title = "Field Comprehensions" 6 description = "" 7 8 -- text.md -- 9 CUE also supports comprehensions for fields. 10 11 One cannot refer to generated fields with references. 12 Instead, one must use indexing. 13 14 -- fieldcomp.cue -- 15 import "strings" 16 17 #a: [ "Barcelona", "Shanghai", "Munich" ] 18 19 for k, v in #a { 20 "\( strings.ToLower(v) )": { 21 pos: k + 1 22 name: v 23 nameLen: len(v) 24 } 25 } 26 27 -- expect-stdout-cue -- 28 barcelona: { 29 name: "Barcelona" 30 pos: 1 31 nameLen: 9 32 } 33 shanghai: { 34 name: "Shanghai" 35 pos: 2 36 nameLen: 8 37 } 38 munich: { 39 name: "Munich" 40 pos: 3 41 nameLen: 6 42 }