According to Apple's documents, the selector doubleValue returns 0.0
if the instance of an NSString that is the receiver "doesn’t begin
with a valid text representation of a floating-point number." Is
there a simple way to distinguish between the string 0.0, which
shouldn't be considered illegitimate for my purposes, and the string
(for example) X0.0 other than writing extra lines of code to
distinguish one case from the other? I know I could use a scanner,
but perhaps there's something simple that I'm overlooking.
Boyd_______________________________________________
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