[erlang-questions] base64:decode fails on facebook base64 encoded strings

[Max Bourinov]

Hi guys,

Does anybody knows why base64:decode fails on strings like this:

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

You can easily decode it with online tool like this:
http://www.motobit.com/util/base64-decoder-encoder.asp

But lovely Erlang says:

** exception error: no function clause matching base64:decode("Jye",

[133,177,157,189,201,165,209,161,180,136,232,137,33,53,5,12,

 181,77,33,4,200,212,216,136,176,137,141|...])
     in function  base64:decode/1

Seems something wrong with pattern matching or what could it be? And most
interesting question - how to find a proper work around?


Best regards,
Max
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