lib

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lib A number of useful library functions

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

flush_receive() -> void() Flush messages

Flushes the message buffer of the current process.

error_message(Format, Args) -> ok Print error message Format = atom() | string() | binary() Args = [term()]

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

progname() -> atom() Return name of Erlang start script

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

nonl(String1) -> String2 Remove last newline String1 = String2 = string()

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

send(To, Msg) Send a message To = pid() | Name | {Name,Node} Name = Node = atom() Msg = term()

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

sendw(To, Msg) Send a message and wait for an answer To = pid() | Name | {Name,Node} Name = Node = atom() Msg = term()

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


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

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