Basically NSString's floatValue and doubleValue methods only work when
the numbers use the US style dot separator (as opposed to other locale
separators such as a comma). If your NSString might contain non-US
separators (or other formatting differences) you'll have to use
NSScanner to do a localized scan of the NSString to extract the
correct number. If you tried to use NSString's doubleValue on
something like "12,34" you would get 12.000.
On May 31, 2008, at 10:22 PM, Markus Spoettl wrote:
Hello List,
I'm having troubles deciphering the documentation. I have doubles
stored in a text file which always use the dot "." as decimal
separator. When converting the strings to doubles the conversion to
be locale independent. The NSString:doubleValue documentation says:
> This method uses formatting information stored in the non-
localized value;
> use an NSScanner object for localized scanning of numeric values
from a string.
"Formatting information stored in the non-localized value" is really
a little cryptic - what formatting information and where is the non-
localized value stored. The part about NSScanner indicates that
NSString:doubleValue is what I want, is it?
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