any() and all()

[tsoernes]

In numpy, doing arr.any() returns (short-circuiting) if any element in the array is true. Similarly for all. Do these exist in ndarray (I could not find them), if not, can I request them?

[nilgoyette]

They don't exist in ndarray, but they exist in Iterator: all and any

You can call iter on your array then use all the methods you want that are defined in the trait Iterator. Something like

if a.iter().any(|&v| v > 4.0) { println!("yeah") }
if a.iter().any(my_func) { ... }

[tsoernes]

Very good, thank you.