Initial commit

src/utils/Lazy.zig

@@ -0,0 +1,20 @@
+const std = @import("std");
+
+pub fn Lazy(comptime T: type, comptime init_fn: std.meta.DeclEnum(T)) type {
+    return struct {
+        const Self = @This();
+
+        value: ?T = null,
+
+        pub fn get(self: *Self) *T {
+            return if (self.value) |*v| v else blk: {
+                self.value = @field(T, @tagName(init_fn))();
+                break :blk &self.value.?;
+            };
+        }
+    };
+}
+
+pub fn lazy(comptime T: type, comptime init_fn: std.meta.DeclEnum(T)) Lazy(T, init_fn) {
+    return .{};
+}