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Merge branch 'master' of https://github.com/type-challenges/type-challenges

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Anthony Fu 2020-08-04 21:15:57 +08:00
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8
questions/18-easy-tuple-length/README.md
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@ -5,11 +5,11 @@ For given a tuple, you need create a generic `Length`, pick the length of the tu
For example
```ts
type tesla = ['tesla', 'model 3', 'model X', 'model Y']
type spaceX = ['FALCON 9', 'FALCON HEAVY', 'DRAGON', 'STARSHIP', 'HUMAN SPACEFLIGHT']
type tesla = ['tesla', 'model 3', 'model X', 'model Y'] as const
type spaceX = ['FALCON 9', 'FALCON HEAVY', 'DRAGON', 'STARSHIP', 'HUMAN SPACEFLIGHT'] as const
type teslaLength = Length<tesla> // expected 4
type spaceXLength = Length<spaceX> // expected 5
type teslaLength = Length<typeof tesla> // expected 4
type spaceXLength = Length<typeof spaceX> // expected 5
```
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8
questions/18-easy-tuple-length/test-cases.ts
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@ -1,9 +1,9 @@
import { Equal, Expect } from '@type-challenges/utils'
const tesla = ['tesla', 'model 3', 'model X', 'model Y']
const spaceX = ['FALCON 9', 'FALCON HEAVY', 'DRAGON', 'STARSHIP', 'HUMAN SPACEFLIGHT']
const tesla = ['tesla', 'model 3', 'model X', 'model Y'] as const
const spaceX = ['FALCON 9', 'FALCON HEAVY', 'DRAGON', 'STARSHIP', 'HUMAN SPACEFLIGHT'] as const
type cases = [
Expect<Equal<Length<tesla>, 4>>,
Expect<Equal<Length<spaceX>, 5>>,
Expect<Equal<Length<typeof tesla>, 4>>,
Expect<Equal<Length<typeof spaceX>, 5>>,
]