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Re: NSExpression

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Re: NSExpression

Subject: Re: NSExpression
From: mmalc crawford <email@hidden>
Date: Sun, 29 Jun 2008 01:32:49 -0700

On Jun 28, 2008, at 10:35 PM, Chris wrote:

NSExpression * ex = [NSExpression expressionForFunction: [NSExpression expressionForConstantValue:@"BAR"] selectorName:@"length" arguments:nil]; NSPredicate * predicate = [NSCompoundPredicate andPredicateWithSubpredicates:[NSArray arrayWithObject: ex]]; [predicate evaluateWithObject:@"FOO" substitutionVariables:nil];

What are you trying to achieve? ex is not a predicate, so you're only supplying one -- incorrect -- argument to create an AND predicate. It's not clear what role "FOO" plays in the third line.

mmalc

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References:  
  >NSExpression (From: Chris <email@hidden>)
  >Re: NSExpression (From: Shawn Erickson <email@hidden>)
  >Re: NSExpression (From: Chris <email@hidden>)




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