[erlang-questions] io_lib printable list

Gleb Peregud <>
Sun Sep 22 10:15:00 CEST 2013


Because "1" is actually a syntactic sugar for [$1] which is syntactic sugar
for [49]


On Sun, Sep 22, 2013 at 2:08 AM, Yuri Shefer <> wrote:

> Hi all,
>
> I have a silly question.
>
> Why io_lib:printable_list() accept characters only in the quotes? Is it
> needed even for the numbers?
>
> 8> io:getopts().
> [{expand_fun,#Fun<group.0.56199974>},
>  {echo,true},
>  {binary,false},
>  {encoding,latin1}]
> 9> io_lib:printable_list(1).
> false
> 10> io_lib:printable_list("1").
> true
>
>
> --
> Best regards,
> Yuri
>
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> 
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>
>
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