[erlang-questions] List Question

Andrew McIntyre <>
Mon Aug 7 14:13:23 CEST 2017


Hello All,

A Newbie question,

Can I tell the difference Between a List of Strings and a Single
String?

eg the Value in a List may just be "FT" or it might be ["FT", "ST"]

I do not know in advance if its a single string or a list of strings,
but want to behave differently - actually return the first element of
the list when there are multiple values. I have parsed a variable
hierarchical structure and the hierarchy can vary over instances.

As strings are lists "is_list" returns true for both. Is that soluble
or do I need to change the data structure to indicate it. Sorry if
this has obvious answer, but new to erlang.

Thanks

-- 
Best regards,
Andrew McIntyre                     mailto:

sent from a real computer

R&D Director
Medical-Objects
4/102 Wises Road
MAROOCHYDORE Q 4558
AUSTRALIA

www.medical-objects.com.au




More information about the erlang-questions mailing list