Re: filtering the values in an NSTableColumn
Re: filtering the values in an NSTableColumn
- Subject: Re: filtering the values in an NSTableColumn
- From: Kyle Sluder <email@hidden>
- Date: Fri, 10 Aug 2012 11:21:47 -0700
On Fri, Aug 10, 2012, at 10:44 AM, Ken Thomases wrote:
> What? There's no requirement that one use NSNumbers.
You're correct, but I certainly didn't expect that! From the Predicate
Programming Guide:
"The format string supports printf-style format arguments such as %x
(see “Formatting String Objects”). Two important arguments are %@ and
%K."
But what can "%x" possibly mean in this context? Do you need to provide
a hex-formatted C string or an integer? If the latter, how does this
format specifier differ from "%d"?
In practice, it looks like "%x" and "%d" are synonymous, and they mean
you can provide a numeric argument. This is just an additional way this
method differs from printf and NSLog, where %K isn't a valid format
specifier.
The Predicate Programming Guide needs to stop relying on half-true
references to similar pieces of functionality when defining its grammar.
It's been a woefully underspecified document for years.
<rdar://problem/12076911> (Predicate Format String Syntax document is
underspecified)
--Kyle Sluder
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