maraiah: add documentation for SeekBackToStart's methods

maraiah/file.rs

@@ -38,10 +38,14 @@ impl<T> std::ops::DerefMut for SeekBackToStart<T>
 impl<T> SeekBackToStart<T>
    where T: Seek
 {
+   /// Creates a new `SeekBackToStart` object.
    pub fn new(sc: T) -> Self {Self{sc, fl: true}}
 
+   /// Sets the seek-back flag.
    pub fn set_seek(&mut self, fl: bool) {self.fl = fl;}
-   pub fn get_seek(&self) -> bool       {self.fl}
+
+   /// Returns the seek-back flag.
+   pub fn get_seek(&self) -> bool {self.fl}
 }
 
 /// Seeks back to the starting position of the inner object when losing scope,