method iter.isEmpty

true if the sequence has no elements (consumes the iterator).

Example:

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fn main() io {
  let none_here: List<i32> = []
  print("{none_here.iter().isEmpty()} {[1].iter().isEmpty()}")
}

Output

true false

pub(api) move fn isEmpty() -> bool

Complexity. O(1): pulls at most one element.

Since. 1.0.0-beta

Returns

bool

none declared (pure unless the body says otherwise)

Defined in: std/core/iter.oxl:596