Re: how to check if a string variable contains a number or string?

["SteveD" <nospam_steved94@attbi.com>]

"Sarah Thomas" <mabes180@aol.com> wrote in message
news:a04a773e.0211181241.4e9e13b0@posting.google.com...
> I have an array of strings that I read in from a file. I want to check
> if each element in the array is a string or if it is a number. is
> there any predefined functions that would help do that? thanks

There are some handy string handling functions in Ada.Strings.Fixed.

To do a quick check to see if a string contains an integer number I usually
create a map (Ada.Strings.Maps) and then search for a character that is
not a digit using Index (Ada.Strings.Fixed).  If I find a non-digit
character
it's not a number.

I just noticed that Ada.Strings.Maps defines a "Character_Sequence" as a
subtype string, and there is a Is_Subset function that could be used to do
the
job as well.

Of course this only works if the "numbers" are integers.

I hope this helps,
SteveD