| title | weight |
|---|---|
Bounds |
130 |
Bounds define
a lower bound, an upper bound, or inequality for a certain value,
all of which can be combined.
They work on numbers, strings, bytes, and null.
A bound is expressed using comparison operators such as >, <=, and !=.
It permits values where the comparison would return true,
and we say that the bound is defined for these values.
{{{with code "en" "tour"}}} #nofmt cue-lang/cue#2913
exec cue eval -ic file.cue cmp stdout out -- file.cue -- #floatOver5: >5.0 // type: float #negativeNum: <0 // type: int | float #afterL: >"L" // type: string #notNull: !=null // type: any except null
zero: 0 & >10 // failure float10: 10.0 & #floatOver5 float5: 5.0 & #floatOver5 // failure "num-6": -6 & #negativeNum A: "A" & #afterL // failure Z: "Z" & #afterL isNull: null & #notNull // failure isNotNull: "X" & #notNull
float425: 42.5 & #notNull & <100 & #floatOver5 -- out -- zero: | // zero: invalid value 0 (out of bound >10) float10: 10.0 float5: | // float5: invalid value 5.0 (out of bound >5.0) "num-6": -6 A: | // A: invalid value "A" (out of bound >"L") Z: "Z" isNull: | // isNull: conflicting values null and !=null (mismatched types null and (bool|string|bytes|func|list|struct|number)) isNotNull: "X" float425: 42.5 {{{end}}}