feat: add struct formating + swap example

Author: guidoschmidt

src/struct-formatting.zig

@@ -0,0 +1,18 @@
+const std = @import("std");
+
+const MyStruct = struct {
+    name: []const u8,
+    value: u32,
+
+    pub fn format(self: MyStruct, writer: *std.Io.Writer) std.Io.Writer.Error!void {
+        try writer.print("{s}", .{self.name});
+    }
+};
+
+pub fn main() !void {
+    const test_str = "Test String";
+    std.debug.print("\n{s}", .{test_str});
+    const example_struct = MyStruct{ .name = "Test", .value = 8 };
+
+    std.debug.print("\n{f}", .{example_struct});
+}

src/swap.zig

@@ -0,0 +1,17 @@
+const std = @import("std");
+
+fn swap(comptime T: type, x: *T, y: *T) void {
+    const t, y.* = .{ y.*, x.* };
+    x.* = t;
+    std.debug.print("\n{d}, {d}", .{ x.*, y.* });
+}
+
+pub fn main() !void {
+    var x: u8 = 250;
+    var y: u8 = 1;
+
+    var i: usize = 0;
+    while (i < 1000) : (i += 1) {
+        swap(u8, &x, &y);
+    }
+}