A number of useful library functions


This module is retained for compatibility. It may disappear without warning in a future release.


flush_receive() -> ok

Flushes the message buffer of the current process.

error_message(Format, Args) -> ok

Prints error message Args in accordance with Format. Similar to io:format/2, see io(3).

progname() -> atom()

Returns the name of the script that started the current Erlang session.

nonl(String1) -> String2

  • String1 = String2 = string()

Removes the last newline character, if any, in String1.

send(To, Msg) -> Msg

  • To = pid() | atom() | {atom(), node()}
  • Msg = term()

This function to makes it possible to send a message using the apply/3 BIF.

sendw(To, Msg) -> Msg

  • To = pid() | atom() | {atom(), node()}
  • Msg = term()

As send/2, but waits for an answer. It is implemented as follows:

sendw(To, Msg) ->
    To ! {self(),Msg},
        Reply -> Reply

The message returned is not necessarily a reply to the message sent.