From 3e89c7c24ce0e01131c4af1379190dd0357158b8 Mon Sep 17 00:00:00 2001
From: Bob Niu <spartucus@users.noreply.github.com>
Date: Fri, 22 Mar 2024 16:22:05 +0800
Subject: [PATCH] refactor code

---
 field/src/fft.rs     | 6 +-----
 starky/src/prover.rs | 2 --
 2 files changed, 1 insertion(+), 7 deletions(-)

diff --git a/field/src/fft.rs b/field/src/fft.rs
index 0a0b5dd8..5fe29b31 100644
--- a/field/src/fft.rs
+++ b/field/src/fft.rs
@@ -38,11 +38,7 @@ fn fft_dispatch<F: Field>(
     zero_factor: Option<usize>,
     root_table: Option<&FftRootTable<F>>,
 ) {
-    let computed_root_table = if root_table.is_some() {
-        None
-    } else {
-        Some(fft_root_table(input.len()))
-    };
+    let computed_root_table = root_table.is_none().then(|| fft_root_table(input.len()));
     let used_root_table = root_table.or(computed_root_table.as_ref()).unwrap();
 
     fft_classic(input, zero_factor.unwrap_or(0), used_root_table);
diff --git a/starky/src/prover.rs b/starky/src/prover.rs
index c7b77b93..29b72521 100644
--- a/starky/src/prover.rs
+++ b/starky/src/prover.rs
@@ -126,8 +126,6 @@ where
     );
 
     // Permutation arguments.
-
-    let constraint_degree = stark.constraint_degree();
     let lookup_challenges = stark.uses_lookups().then(|| {
         if let Some(c) = ctl_challenges {
             c.challenges.iter().map(|ch| ch.beta).collect::<Vec<_>>()