[board] Implement FromIterator for BitBoard

board/src/bitboard/bitboard.rs

@@ -1,7 +1,7 @@
 // Eryn Wells <eryn@erynwells.me>
 
 use super::library::{library, FILES, RANKS};
-use super::{LeadingBitScanner, TrailingBitScanner};
+use super::LeadingBitScanner;
 use crate::{square::Direction, Square};
 use std::fmt;
 use std::ops::{BitAnd, BitAndAssign, BitOr, BitOrAssign, Not};
@@ -87,6 +87,18 @@ impl From<Square> for BitBoard {
     }
 }
 
+impl FromIterator<Square> for BitBoard {
+    fn from_iter<T: IntoIterator<Item = Square>>(iter: T) -> Self {
+        let mut builder = BitBoardBuilder::empty();
+
+        for sq in iter {
+            builder = builder.square(sq)
+        }
+
+        builder.build()
+    }
+}
+
 impl fmt::Binary for BitBoard {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         // Delegate to u64's implementation of Binary.