Qute: How to test type

[trixpan]

After reading the guide I couldn't find the answer.

What is the simplest way to iterate over something like:

   Map<String, Object> attributes = new java.util.HashMap<>(Map.of());
   ...
   instance = instance.data("attributes", attributes);

Where some attributes can be String and others List or Map?

Using something as

          {#for attribute in attributes}
            <tr>
                <td>{attribute.key}</td>
                {#if attribute.value.size}
                    "ohh"
                {/if}
            </tr>
            {/for}

results in

Property "size" not found on the base object "java.lang.String" in expression {attribute.value.size}

[quarkus-bot[bot]]

/cc @mkouba (qute)

[mkouba]

You can use default values and safe expressions in order to suppress the error, see also Strict Rendering. In your case, {#if attribute.value.size??} should do the trick. It's a shorthand notation for {#if attribute.value.size.or(null)} and null is considered falsy.