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Function: <code>CONTAINS_ONLY</code>

Syntax: <code>CONTAINS_ONLY(list, term|term_list)</code>

Description: Returns <code>true</code> if every element in the list matches at least one of the provided values. Unlike <code>CONTAINS_EXACTLY</code>, it does not require all provided values to be present - it only checks that no unexpected values exist.

By strict definition, an empty list will return <code>true</code>.

<code>CONTAINS_ONLY(label_names, "bug")</code> returns <code>true</code> if <code>label_names</code> contains nothing but <code>bug</code> entries.

<code>CONTAINS_ONLY(label_names, ["bug", "enhancement"])</code> returns <code>true</code> if every label is either <code>bug</code> or <code>enhancement</code>. The list does not need to contain both.

<code>CONTAINS_ONLY(assignee_usernames, ["john", "jenny"])</code> returns <code>true</code> if every assignee is <code>john</code> or <code>jenny</code>, otherwise it returns <code>false</code>.

<code>CONTAINS_ONLY(["bug", "bug"], ["bug", "enhancement"])</code> returns <code>true</code> because every element in the first array is found in the second one.

<code>CONTAINS_ONLY(["bug", "enhancement", "security"], ["bug", "enhancement"])</code> returns <code>false</code> because <code>security</code> is not in the allowed values.

<code>CONTAINS_ONLY([], ["bug", "enhancement"])</code> returns <code>true</code> because the tested array has no elements.

- <code>CONTAINS_ONLY(label_names, "bug")</code> returns <code>true</code> if <code>label_names</code> contains nothing but <code>bug</code> entries.
- <code>CONTAINS_ONLY(label_names, ["bug", "enhancement"])</code> returns <code>true</code> if every label is either <code>bug</code> or <code>enhancement</code>. The list does not need to contain both.
- <code>CONTAINS_ONLY(assignee_usernames, ["john", "jenny"])</code> returns <code>true</code> if every assignee is <code>john</code> or <code>jenny</code>, otherwise it returns <code>false</code>.
- <code>CONTAINS_ONLY(["bug", "bug"], ["bug", "enhancement"])</code> returns <code>true</code> because every element in the first array is found in the second one.
- <code>CONTAINS_ONLY(["bug", "enhancement", "security"], ["bug", "enhancement"])</code> returns <code>false</code> because <code>security</code> is not in the allowed values.
- <code>CONTAINS_ONLY([], ["bug", "enhancement"])</code> returns <code>true</code> because the tested array has no elements.

CONTAINS_ONLY

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