FullTextFunction
public final class FullTextFunctionFull-text function factory.
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                  Creates a full-text rank function with the given full-text index name. The rank function indicates how well the current query result matches the full-text query when performing the match comparison. DeclarationSwift public static func rank(_ indexName: String) -> ExpressionProtocolParametersindexNameThe index name. Return ValueThe full-text rank function. 
 FullTextFunction Class Reference
        FullTextFunction Class Reference