I think this is kind of neat:
pub fn equals(self: Value, other: Value) bool {
return switch (self) {
inline else => |value, tag| tag == std.meta.activeTag(other) and value == @field(other, @tagName(tag)),
};
}
This works because for nil it just compares that {} is equal to {} which is true.
If any case should compare values differently like for example float, you can add it as an explicit case like this:
pub fn equals(self: Value, other: Value) bool {
return switch (self) {
.float => |f| .float == std.meta.activeTag(other) and floatEqualImpl(f, other.float),
inline else => |value, tag| tag == std.meta.activeTag(other) and value == @field(other, @tagName(tag)),
};
}