Talk:Determine if a string is numeric: Difference between revisions

 

In the past, I have assumed that the number system was decimal and accepted only digits, an optional leading hyphen, and a single decimal point. With that logic, "a numeric string is a string consisting only of digits, an optional leading hyphen and an optional single decimal point". Maybe this is the way to go. Note that in some locales, numeric strings fall outside of this definition, so this also needs to be considered. Under that definition strings containing whitespace return a result of "not numeric", but this does not matter in practice, because code that makes use of the result can easily trim whitespace from the string before feeding it to the evaluator (I have done this before and it has worked well for me). --[[User:Markhobley|Markhobley]] 21:38, 4 June 2011 (UTC)

 

== Objective-C question ==