sift/list

List validators — length constraints.

Values

pub fn max_length(
  n: Int,
  msg: String,
) -> fn(List(a)) -> Result(List(a), String)

List must have at most n items

</>

pub fn min_length(
  n: Int,
  msg: String,
) -> fn(List(a)) -> Result(List(a), String)

List must have at least n items

</>

pub fn non_empty(
  msg: String,
) -> fn(List(a)) -> Result(List(a), String)

List must not be empty