Class

NSExpressionDescription

Instances of NSExpressionDescription objects represent a special property description type intended for use with the NSFetchRequest propertiesToFetch method.

Overview

An NSExpressionDescription describes a column to be returned from a fetch that may not appear directly as an attribute or relationship on an entity. Examples might include upper(attribute) or max(attribute). You cannot set an NSExpressionDescription object as a property of an entity.

Symbols

Getting Information About an Expression Description

var expression: NSExpression?

The expression for the receiver.

Relationships