finally, learn how generate struct with builtin function in Zig

[xxleyi]

const std = @import("std");
const builtin = @import("std").builtin;
const debug = @import("std").debug;

const A = @Type(.{
    .Struct = .{
        .layout = .Auto,
        .fields = &[_]builtin.Type.StructField{
            .{ .name = "one", .field_type = i32, .default_value = null, .is_comptime = false, .alignment = 0 },
        },
        .decls = &[_]builtin.Type.Declaration{},
        .is_tuple = false,
    },
});
test "test generate types" {
    const a: A = .{ .one = 25 };
    debug.assert(a.one == 25);
}

pub fn main() void {
    const a: A = .{ .one = 33 };
    debug.print("a.one is {}\n", .{a.one});
}