sift/int

Integer validators — range, positivity, and membership checks.

Values

pub fn between(
  lo: Int,
  hi: Int,
  msg: String,
) -> fn(Int) -> Result(Int, String)

Value must be between lo and hi (inclusive).

let validator = int.between(1, 100, "out of range")
validator(50)   // -> Ok(50)
validator(200)  // -> Error("out of range")

</>

pub fn max(n: Int, msg: String) -> fn(Int) -> Result(Int, String)

Value must be <= n

</>

pub fn min(n: Int, msg: String) -> fn(Int) -> Result(Int, String)

Value must be >= n

</>

pub fn non_negative(
  msg: String,
) -> fn(Int) -> Result(Int, String)

Value must be >= 0

</>

pub fn one_of(
  values: List(Int),
  msg: String,
) -> fn(Int) -> Result(Int, String)

Value must be one of the given values

</>

pub fn positive(msg: String) -> fn(Int) -> Result(Int, String)

Value must be > 0