The Java – freemaker template checks whether the sequence is empty

• Java

I want to check whether the sequence is empty in the freemaker template

This fragment is used to check whether the sequence contains values:

<#if node.attachments?seq_contains("blue")>
  <pre>hello</pre>
</#if>

However, if node Attachments is empty. I want to do something else

Is that the grammar of this?

Solution

This job

< #if node. attachments？ size！= 0>

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