Function bevy_ecs::system::assert_is_read_only_system

source · 
pub fn assert_is_read_only_system<In, Out, Marker, S: IntoSystem<In, Out, Marker>>(
    sys: S
)where
    S::System: ReadOnlySystem,
Expand description

Ensure that a given function is a read-only system.

This should be used when writing doc examples, to confirm that systems used in an example are valid systems.