FEAT: Update ndarray-parallel for rayon 1.0

Author: bluss

parallel/Cargo.toml

@@ -13,7 +13,7 @@ keywords = ["data-structure", "multidimensional", "parallel", "concurrent"]
 categories = ["data-structures", "science", "concurrency"]
 
 [dependencies]
-rayon = { version = "0.9.0" }
+rayon = { version = "1.0" }
 ndarray = { version = "0.11.0", path = "../" }
 
 [dev-dependencies]

parallel/benches/rayon.rs

@@ -21,8 +21,7 @@ use std::cmp::max;
 fn set_threads() {
     let n = max(1, num_cpus::get() / 2);
     //println!("Using {} threads", n);
-    let cfg = rayon::Configuration::new().num_threads(n);
-    let _ = rayon::initialize(cfg);
+    let _ = rayon::ThreadPoolBuilder::new().num_threads(n).build_global();
 }
 
 #[bench]

parallel/src/lib.rs

@@ -58,7 +58,7 @@
 //!     a.axis_iter(Axis(0))
 //!      .into_par_iter()
 //!      .map(|row| row.scalar_sum())
-//!      .collect_into(&mut sums);
+//!      .collect_into_vec(&mut sums);
 //!
 //!     assert_eq!(sums, [120., 376., 632., 888.]);
 //! }

parallel/src/par.rs

@@ -53,7 +53,7 @@ macro_rules! par_iter_wrapper {
             bridge(self, consumer)
         }
 
-        fn opt_len(&mut self) -> Option<usize> {
+        fn opt_len(&self) -> Option<usize> {
             Some(self.iter.len())
         }
     }
@@ -68,7 +68,7 @@ macro_rules! par_iter_wrapper {
             callback.callback(ParallelProducer(self.iter))
         }
 
-        fn len(&mut self) -> usize {
+        fn len(&self) -> usize {
             ExactSizeIterator::len(&self.iter)
         }
 
@@ -145,7 +145,7 @@ macro_rules! par_iter_view_wrapper {
             bridge_unindexed(ParallelProducer(self.iter), consumer)
         }
 
-        fn opt_len(&mut self) -> Option<usize> {
+        fn opt_len(&self) -> Option<usize> {
             None
         }
     }
@@ -223,7 +223,7 @@ macro_rules! zip_impl {
                 bridge_unindexed(ParallelProducer(self.iter), consumer)
             }
 
-            fn opt_len(&mut self) -> Option<usize> {
+            fn opt_len(&self) -> Option<usize> {
                 None
             }
         }