003 if else

// Template engine: `{% if %}/{% else %}` — an absent variable takes the else
// branch. Pins `{% else %}` support (liquid has if/endif; else is the piece to
// verify is wired). The metaprogramming story leans on else for the
// "branch present? lower it : comp error" shape.
~import std/io

~pub event pick { }

~proc pick|template|zig {
    {% if missing %}
    @import("std").debug.print("has-missing\n", .{});
    {% else %}
    @import("std").debug.print("no-missing\n", .{});
    {% endif %}
}

~pick()