bevy_reflect/
is.rs

1use core::any::{Any, TypeId};
2
3/// Checks if the current type "is" another type, using a [`TypeId`] equality comparison.
4pub trait Is {
5    /// Checks if the current type "is" another type, using a [`TypeId`] equality comparison.
6    /// This is most useful in the context of generic logic.
7    ///
8    /// ```
9    /// # use bevy_reflect::Is;
10    /// # use std::any::Any;
11    /// fn greet_if_u32<T: Any>() {
12    ///     if T::is::<u32>() {
13    ///         println!("Hello");
14    ///     }
15    /// }
16    /// // this will print "Hello"
17    /// greet_if_u32::<u32>();
18    /// // this will not print "Hello"
19    /// greet_if_u32::<String>();
20    /// assert!(u32::is::<u32>());
21    /// assert!(!usize::is::<u32>());
22    /// ```
23    fn is<T: Any>() -> bool;
24}
25
26impl<A: Any> Is for A {
27    #[inline]
28    fn is<T: Any>() -> bool {
29        TypeId::of::<A>() == TypeId::of::<T>()
30    }
31}
bevy_reflect/is.rs

bevy_reflect/
is.rs
