[erlang-questions] List comprehension puzzler

[lloyd@REDACTED]

Hello,

Now this I would not expect: 

4> S = "123a456".
"123a456"

5> is_integer(S).
false

6> [is_integer(I) || I <- S].
[true,true,true,true,true,true,true]

Please tell me what I don't understand.

Many thanks,

LRP


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