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6141 - Binary to Decimal #6985

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ch3cknull opened this issue Mar 1, 2022 · 0 comments

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ch3cknull commented Mar 1, 2022

type ExpandTwo<T extends any[]> = [...T, ...T]

type BinaryToDecimal<S extends string, R extends any[] = []> = S extends `${infer L}${infer Rest}`
? L extends '0'
  ? BinaryToDecimal<Rest, ExpandTwo<R>>
  : BinaryToDecimal<Rest, [...ExpandTwo<R>, 0]>
: R['length']

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