method List.count

The number of elements for which p is true.

Example:

oxl✓ checked in CI

fn main() io {
  print("{[1, 2, 3, 4].count(x => x > 1)}")
}

Output

pub(api) fn count<effect F>(p: fn(T) -> bool F) -> usize  F

Since. 1.0.0-beta

Parameters

Name	Type
`p`	`fn(T) -> bool F`

usize F

none declared (pure unless the body says otherwise)

Defined in: std/core/collections.oxl:523