Erlang atoms and ".." -


this output of erlang shell:

1> atom. atom 2> next_atom. next_atom 3> atom@erlang. atom@erlang 4> 'atom in single quotes'. 'atom in single quotes' 5> atom = 'atom'. atom 6> a.tom. 'a.tom' 7> a..tom. * 1: syntax error before: '..'

when there 1 dot . within atom (line 6), no errors. however, when there .., syntax error. .. have special meaning in erlang or why error when . works fine?

dots not allowed such in atoms, dot between 2 atoms: 'foo'.'bar', compile time operator concatenates atoms 'foo.bar'.

this extension made support (still not officially supported) java-like package system. that's why it's not documented.


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