How to check if a pointer is a single item or multi-item pointer to determine whether to call .free or .destroy

Help
,
2

Assuming by your example that the type is known at comptime, you can switch based on @typeInfo.

pub fn deinit(comptime T: type, rc_ptr: RcPtr(T), allocator: std.mem.Allocator) void {
    // do whatever other logic...

    switch (@typeInfo(T).Pointer.size) {
        .One => allocator.destroy(value_ptr),
        .Many => allocator.free(value_ptr),
        else => unreachable, // .Slice, .C
    }
}
2 Likes