Serialize const arrays with serde_arrays

rand_distr/Cargo.toml

@@ -21,12 +21,13 @@ default = ["std"]
 std = ["alloc", "rand/std"]
 alloc = ["rand/alloc"]
 std_math = ["num-traits/std"]
-serde1 = ["serde", "rand/serde1"]
+serde1 = ["serde", "serde_arrays", "rand/serde1"]
 
 [dependencies]
 rand = { path = "..", version = "0.9.0", default-features = false }
 num-traits = { version = "0.2", default-features = false, features = ["libm"] }
 serde = { version = "1.0.103", features = ["derive"], optional = true }
+serde_arrays = { version = "0.1.0", optional = true }
 
 [dev-dependencies]
 rand_pcg = { version = "0.4.0", path = "../rand_pcg" }

rand_distr/src/dirichlet.rs

@@ -13,6 +13,8 @@ use num_traits::Float;
 use crate::{Distribution, Exp1, Gamma, Open01, StandardNormal};
 use rand::Rng;
 use core::fmt;
+#[cfg(feature = "serde1")]
+use serde::{Serialize, Deserialize};
 
 /// The Dirichlet distribution `Dirichlet(alpha)`.
 ///
@@ -32,7 +34,9 @@ use core::fmt;
 /// ```
 #[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
 #[derive(Clone, Debug, PartialEq)]
-#[cfg_attr(feature = "serde1", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde1", serde(bound(serialize = "F: Serialize")))]
+#[cfg_attr(feature = "serde1", serde(bound(deserialize = "F: Deserialize<'de>")))]
 pub struct Dirichlet<F, const N: usize>
 where
     F: Float,
@@ -41,6 +45,7 @@ where
     Open01: Distribution<F>,
 {
     /// Concentration parameters (alpha)
+    #[cfg_attr(feature = "serde1", serde(with = "serde_arrays"))]
     alpha: [F; N],
 }