add an example to print the Fq and Fr of all the Arkworks' curves

examples/curves.rs

@@ -9,6 +9,34 @@ fn show_curve<Fr: PrimeField, Fq: PrimeField>(name: &str) {
     );
 }
 
+/// takes a sequence of curve crate names and calls the [`show_curve`] function
+/// for you
+///
+/// this macro accepts a trailling comma in case you have a big list that spans
+/// over multiple lines, e.g.
+///
+/// ## examples
+/// ```rust
+/// show_curve(ark_bls12_381)
+/// ```
+/// or
+/// ```rust
+/// show_curve(
+///     ark_bls12_381,
+///     ark_bn254,
+///     ark_pallas,
+///     ark_vesta
+/// )
+/// ```
+/// or
+/// ```rust
+/// show_curve(
+///     ark_bls12_381,
+///     ark_bn254,
+///     ark_pallas,
+///     ark_vesta,
+/// )
+/// ```
 macro_rules! show_curve {
     ($($c:ident),+ $(,)?) => {
         $(show_curve::<$c::Fr, $c::Fq>(stringify!($c));)*