remove some unwrap_unchecked

src/misc.rs

@@ -1,5 +1,5 @@
-use base64::Engine;
 use base64::engine::general_purpose;
+use base64::Engine;
 use egui_plot::{Line, PlotPoint, PlotPoints, Points};
 use emath::Pos2;
 use itertools::Itertools;
@@ -91,9 +91,7 @@ pub fn newtons_method_helper(
         .filter(|(prev, curr)| prev.y.is_finite() && curr.y.is_finite())
         .filter(|(prev, curr)| prev.y.signum() != curr.y.signum())
         .map(|(start, _)| start.x)
-        .map(|x| newtons_method(f, f_1, x, range, threshold))
-        .filter(|x| x.is_some())
-        .map(|x| unsafe { x.unwrap_unchecked() })
+        .filter_map(|x| newtons_method(f, f_1, x, range, threshold))
         .collect()
 }