Impl Pow + TryFrom<&str> for Uint256 and Int256

src/int256.rs

@@ -1,7 +1,7 @@
 use bnum::types::I256;
 use bnum::BInt;
 use num_traits::{
-    Bounded, CheckedAdd, CheckedDiv, CheckedMul, CheckedSub, FromPrimitive, Num, One, Signed,
+    Bounded, CheckedAdd, CheckedDiv, CheckedMul, CheckedSub, FromPrimitive, Num, One, Pow, Signed,
     ToPrimitive, Zero,
 };
 use serde::ser::Serialize;
@@ -218,6 +218,14 @@ impl FromStr for Int256 {
     }
 }
 
+impl TryFrom<&str> for Int256 {
+    type Error = crate::error::ParseError;
+
+    fn try_from(value: &str) -> Result<Self, Self::Error> {
+        value.parse()
+    }
+}
+
 impl TryFrom<Uint256> for Int256 {
     type Error = ();
 
@@ -285,6 +293,14 @@ impl Signed for Int256 {
     }
 }
 
+impl Pow<u32> for Int256 {
+    type Output = Self;
+
+    fn pow(self, p: u32) -> Self::Output {
+        Int256(self.0.pow(p))
+    }
+}
+
 /// A macro that forwards an unary operator trait i.e. Add
 macro_rules! forward_op {
     (impl $trait_: ident for $type_: ident { fn $method: ident }) => {

src/uint256.rs

@@ -2,8 +2,8 @@ pub use super::Int256;
 use bnum::types::U256;
 use bnum::BUint;
 use num_traits::{
-    Bounded, CheckedAdd, CheckedDiv, CheckedMul, CheckedSub, FromPrimitive, Num, One, ToPrimitive,
-    Zero,
+    Bounded, CheckedAdd, CheckedDiv, CheckedMul, CheckedSub, FromPrimitive, Num, One, Pow,
+    ToPrimitive, Zero,
 };
 use serde::ser::Serialize;
 use serde::{Deserialize, Deserializer, Serializer};
@@ -183,6 +183,14 @@ impl FromStr for Uint256 {
     }
 }
 
+impl TryFrom<&str> for Uint256 {
+    type Error = crate::error::ParseError;
+
+    fn try_from(value: &str) -> Result<Self, Self::Error> {
+        value.parse()
+    }
+}
+
 impl fmt::Display for Uint256 {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "{}", &self.0.to_str_radix(10))
@@ -301,6 +309,14 @@ impl Into<[u8; 32]> for Uint256 {
     }
 }
 
+impl Pow<u32> for Uint256 {
+    type Output = Self;
+
+    fn pow(self, p: u32) -> Self::Output {
+        Uint256(self.0.pow(p))
+    }
+}
+
 macro_rules! uint_impl_from_uint {
     ($T:ty) => {
         impl From<$T> for Uint256 {