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Question

I’m really confused about this now. I’m pretty sure that

let x:SomeType[] = []

is equivalent to

let x: Array<SomeType> = []

but is

let x:[SomeType] = []

also equivalent and correct?

asked Aug 28 ’20 at 0:13

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Answer 1

10

No. [SomeType] represents a tuple type, i.e., an array with exactly one element of SomeType

[string, number], for example, would match an array like ["test", 0]

source:

https://stackoverflow.com/questions/63625736/is-interface-a-valid-array-definition-in-typescript

25 marca 2021