Data update

Task/Parametric-polymorphism/Zig/parametric-polymorphism.zig

@@ -0,0 +1,33 @@
+const std = @import("std");
+
+pub fn main() void {
+    var tree = Tree(u8).init(10);
+    std.debug.print("Before: {}\n", .{tree.value});
+    tree.replace_all(65);
+    std.debug.print("After: {}\n", .{tree.value});
+
+}
+
+pub fn Tree(T: type) type {
+
+    return struct {
+      const Self = @This();
+      value: T,
+      left: ?*Self,
+      right: ?*Self,
+
+      pub fn init(value: T) Self {
+          return Self{
+              .value = value,
+              .left = null,
+              .right = null,
+          };
+      }
+
+      pub fn replace_all(self: *Self, value: T) void {
+          self.value = value;
+          if (self.left) |_| self.left.?.replace_all(value);
+          if (self.right) |_| self.right.?.replace_all(value);
+      }
+    };
+}