[erlang-questions] Reason for "format string not a textual constant"

[xpdoka]

Hi Eric,

When io:format's first argument (the format string) is a constant string, the compiler can check it and issue a warning if the string is invalid, or has the wrong number of control sequences compared to the number of elements in the second argument. When the format string is not a constant, the compiler can warn you that it is unable to give you those previews warnings!

Cheers,
Dominic
--
Dominic Williams
http://www.dominicwilliams.net

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