/Prelude-v21.1.0/Integer/positive.dhall

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Returns True for any Integer greater than +0.

positive is more efficient than ./greaterThan +0 or ./greaterThanEqual +1.

Examples

positive +1 ≡ True
positive +0 ≡ False
positive -1 ≡ False

Source

{-|
Returns `True` for any `Integer` greater than `+0`.

`positive` is more efficient than `./greaterThan +0` or `./greaterThanEqual +1`.
-}
let not =
../Bool/not.dhall sha256:723df402df24377d8a853afed08d9d69a0a6d86e2e5b2bac8960b0d4756c7dc4
? ../Bool/not.dhall

let nonPositive =
./nonPositive.dhall sha256:e00a852eed5b84ff60487097d8aadce53c9e5301f53ff4954044bd68949fac3b
? ./nonPositive.dhall

let positive
: Integer → Bool
= λ(n : Integer) → not (nonPositive n)

let example0 = assert : positive +1 ≡ True

let example1 = assert : positive +0 ≡ False

let example2 = assert : positive -1 ≡ False

in positive