doc: enum methods (#10572)
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806719786f
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625dc6e0ff
44
doc/docs.md
44
doc/docs.md
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@ -2675,6 +2675,50 @@ fn main() {
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}
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```
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Enums can have methods, just like structs
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```v
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enum Cycle {
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one
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two
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three
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}
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fn (c Cycle) next() Cycle {
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match c {
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.one {
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return .two
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}
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.two {
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return .three
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}
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.three {
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return .one
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}
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}
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}
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mut c := Cycle.one
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for _ in 0 .. 10 {
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println(c)
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c = c.next()
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}
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```
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Output:
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```
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one
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two
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three
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one
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two
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three
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one
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two
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three
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one
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```
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#### Dynamic casts
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To check whether a sum type instance holds a certain type, use `sum is Type`.
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