diff --git a/src/buffer.rs b/src/buffer.rs
index 0426abd..50512e5 100644
--- a/src/buffer.rs
+++ b/src/buffer.rs
@@ -89,11 +89,6 @@ impl Buffer {
         (i as u16 % self.area.width, i as u16 / self.area.width)
     }
 
-    pub fn set(&mut self, x: u16, y: u16, cell: Cell) {
-        let i = self.index_of(x, y);
-        self.content[i] = cell;
-    }
-
     pub fn set_symbol(&mut self, x: u16, y: u16, symbol: &str) {
         let i = self.index_of(x, y);
         self.content[i].symbol.clear();
@@ -133,13 +128,13 @@ impl Buffer {
     }
 
 
-    pub fn update_colors(&mut self, x: u16, y: u16, fg: Color, bg: Color) {
+    pub fn set_colors(&mut self, x: u16, y: u16, fg: Color, bg: Color) {
         let i = self.index_of(x, y);
         self.content[i].fg = fg;
         self.content[i].bg = bg;
     }
 
-    pub fn update_cell(&mut self, x: u16, y: u16, symbol: &str, fg: Color, bg: Color) {
+    pub fn set_cell(&mut self, x: u16, y: u16, symbol: &str, fg: Color, bg: Color) {
         let i = self.index_of(x, y);
         self.content[i].symbol.clear();
         self.content[i].symbol.push_str(symbol);
@@ -147,6 +142,13 @@ impl Buffer {
         self.content[i].bg = bg;
     }
 
+    pub fn update_cell<F>(&mut self, x: u16, y: u16, f: F)
+        where F: Fn(&mut Cell)
+    {
+        let i = self.index_of(x, y);
+        f(&mut self.content[i]);
+    }
+
     pub fn resize(&mut self, area: Rect) {
         let length = area.area() as usize;
         if self.content.len() > length {
diff --git a/src/widgets/barchart.rs b/src/widgets/barchart.rs
index 7fd5a6d..3c48196 100644
--- a/src/widgets/barchart.rs
+++ b/src/widgets/barchart.rs
@@ -114,12 +114,12 @@ impl<'a> Widget for BarChart<'a> {
                 };
 
                 for x in 0..self.bar_width {
-                    buf.update_cell(chart_area.left() + i as u16 * (self.bar_width + self.bar_gap) +
-                                    x,
-                                    chart_area.top() + j,
-                                    symbol,
-                                    self.bar_color,
-                                    Color::Reset);
+                    buf.set_cell(chart_area.left() + i as u16 * (self.bar_width + self.bar_gap) +
+                                 x,
+                                 chart_area.top() + j,
+                                 symbol,
+                                 self.bar_color,
+                                 Color::Reset);
                 }
 
                 if d.1 > 8 {
diff --git a/src/widgets/block.rs b/src/widgets/block.rs
index f725479..23eb565 100644
--- a/src/widgets/block.rs
+++ b/src/widgets/block.rs
@@ -85,24 +85,24 @@ impl<'a> Widget for Block<'a> {
         // Sides
         if self.borders.intersects(border::LEFT) {
             for y in area.top()..area.bottom() {
-                buf.update_cell(area.left(), y, line::VERTICAL, self.border_color, self.bg);
+                buf.set_cell(area.left(), y, line::VERTICAL, self.border_color, self.bg);
             }
         }
         if self.borders.intersects(border::TOP) {
             for x in area.left()..area.right() {
-                buf.update_cell(x, area.top(), line::HORIZONTAL, self.border_color, self.bg);
+                buf.set_cell(x, area.top(), line::HORIZONTAL, self.border_color, self.bg);
             }
         }
         if self.borders.intersects(border::RIGHT) {
             let x = area.right() - 1;
             for y in area.top()..area.bottom() {
-                buf.update_cell(x, y, line::VERTICAL, self.border_color, self.bg);
+                buf.set_cell(x, y, line::VERTICAL, self.border_color, self.bg);
             }
         }
         if self.borders.intersects(border::BOTTOM) {
             let y = area.bottom() - 1;
             for x in area.left()..area.right() {
-                buf.update_cell(x, y, line::HORIZONTAL, self.border_color, self.bg);
+                buf.set_cell(x, y, line::HORIZONTAL, self.border_color, self.bg);
             }
         }
 
diff --git a/src/widgets/gauge.rs b/src/widgets/gauge.rs
index 4b420d7..9f514e8 100644
--- a/src/widgets/gauge.rs
+++ b/src/widgets/gauge.rs
@@ -90,7 +90,7 @@ impl<'a> Widget for Gauge<'a> {
                            self.background_color);
 
             for x in gauge_area.left()..end {
-                buf.update_colors(x, gauge_area.top(), self.background_color, self.color);
+                buf.set_colors(x, gauge_area.top(), self.background_color, self.color);
             }
         }
     }
diff --git a/src/widgets/sparkline.rs b/src/widgets/sparkline.rs
index 6672edf..ee672b8 100644
--- a/src/widgets/sparkline.rs
+++ b/src/widgets/sparkline.rs
@@ -89,11 +89,11 @@ impl<'a> Widget for Sparkline<'a> {
                         7 => bar::SEVEN_EIGHTHS,
                         _ => bar::FULL,
                     };
-                    buf.update_cell(spark_area.left() + i as u16,
-                                    spark_area.top() + j,
-                                    symbol,
-                                    self.color,
-                                    self.background_color);
+                    buf.set_cell(spark_area.left() + i as u16,
+                                 spark_area.top() + j,
+                                 symbol,
+                                 self.color,
+                                 self.background_color);
 
                     if *d > 8 {
                         *d -= 8;
diff --git a/src/widgets/text.rs b/src/widgets/text.rs
index 03461b2..510bb0b 100644
--- a/src/widgets/text.rs
+++ b/src/widgets/text.rs
@@ -182,7 +182,7 @@ impl<'a> Widget for Text<'a> {
                 break;
             }
 
-            buf.update_cell(text_area.left() + x, text_area.top() + y, s, c, self.bg);
+            buf.set_cell(text_area.left() + x, text_area.top() + y, s, c, self.bg);
             x += 1;
         }