zig: inheritance

main.zig

pub const B = struct {
    const Self = @This();

    data: []const u8,

    pub fn getParent(self: *Self) *A {
        return @fieldParentPtr(A, "child", self);
    }
};

pub const A = struct {
    child: B,
};

pub fn main() !void {
    var a: A = .{ .child = .{ .data = "I am A!"} };
    var b: A = .{ .child = .{ .data = "I am B!"} };

    const std = @import("std");

    std.log.info("A: {}", .{a.child.getParent()});
    std.log.info("B: {}", .{b.child.getParent()});
}