Add variadic macro invocation macro (#420)

src/lib.rs

@@ -41,3 +41,10 @@ pub mod unidirectional_dijkstra;
 pub mod union_find;
 pub mod unsafe_slice;
 pub mod wgs84;
+
+#[macro_export]
+macro_rules! invoke_macro_for_types {
+    ($macro:ident, $($args:ident),*) => {
+        $( $macro!($args); )*
+    }
+}

src/rdx_sort.rs

@@ -1,6 +1,8 @@
 pub mod radix {
     use core::mem;
 
+    use crate::invoke_macro_for_types;
+
     pub trait RadixType: Clone + Copy + Default {
         // RadixTypes are sortable by rdx_sort(.)
         const IS_SIGNED: bool;
@@ -56,19 +58,9 @@ pub mod radix {
     }
 
     // define built-in number types (integers, floats, bool) as RadixType
-    radix_type!(u8);
-    radix_type!(u16);
-    radix_type!(u32);
-    radix_type!(u64);
-    radix_type!(u128);
-    radix_type!(usize);
-
-    radix_type!(i8);
-    radix_type!(i16);
-    radix_type!(i32);
-    radix_type!(i64);
-    radix_type!(i128);
-    radix_type!(isize);
+    invoke_macro_for_types!(
+        radix_type, u8, u16, u32, u64, u128, usize, i8, i16, i32, i64, i128, isize
+    );
 
     radix_type!(bool, u8);
 

src/top_k.rs

@@ -1,9 +1,11 @@
+use crate::invoke_macro_for_types;
+
 pub trait ComparisonValue {
     type Integral: Default;
     fn value(&self) -> Self::Integral;
 }
 
-macro_rules! comparison_value {
+macro_rules! cv {
     // short-hand to add a default ComparisonValue implementation for the
     // given input type. Works with built-in types like integers.
     ($a:ident) => {
@@ -17,20 +19,7 @@ macro_rules! comparison_value {
     };
 }
 
-// define built-in number types (integers, floats, bool)
-comparison_value!(u8);
-comparison_value!(u16);
-comparison_value!(u32);
-comparison_value!(u64);
-comparison_value!(u128);
-comparison_value!(usize);
-
-comparison_value!(i8);
-comparison_value!(i16);
-comparison_value!(i32);
-comparison_value!(i64);
-comparison_value!(i128);
-comparison_value!(isize);
+invoke_macro_for_types!(cv, u8, u16, u32, u64, u128, usize, i8, i16, i32, i64, i128, isize);
 
 pub fn top_k<T: ComparisonValue + Copy + std::cmp::Ord>(
     input: impl IntoIterator<Item = T>,