CODEWITHSUNDEEP
typescript
MuriloKunze
MuriloKunze

Reputation: 15583

Array of array of multiple strings

I am trying to create an array of array of strings, something like this:

let rules : type = [
 ["N"]
 ["N", "N"]
 ["N", "N", "N"]
]

But I couldn't set the type. How can I do this?

Upvotes: 0

Views: 105

Answers (1)

JohnnyHK
JohnnyHK

Reputation: 311865

Several options here. The best way to go would be as true arrays of arrays:

let rules : string[][] = [
 ["N"],
 ["N", "N"],
 ["N", "N", "N"]
];

or

let rules : Array<Array<string>> = [
 ["N"],
 ["N", "N"],
 ["N", "N", "N"]
];

You can also type it using single-element tuple types, but that's not really the intended usage of tuple types:

let rules : [string[]] = [
 ["N"],
 ["N", "N"],
 ["N", "N", "N"]
];

or

let rules : [string][] = [
 ["N"],
 ["N", "N"],
 ["N", "N", "N"]
];

or

let rules : [[string]] = [
 ["N"],
 ["N", "N"],
 ["N", "N", "N"]
];

Upvotes: 3

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