lib

Useful library functions.

Warning!

This module is retained for backward compatibility. It can disappear without warning in a future Erlang/OTP release.

Functions

error_message(Format, Args) -> ok

Format = io:format()
Args = [term()]

Prints error message Args in accordance with Format. Similar to io:format/2.

flush_receive() -> ok

Flushes the message buffer of the current process.

nonl(String1) -> String2

String1 = String2 = string()

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

progname() -> atom()

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

send(To, Msg) -> Msg

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

Makes it possible to send a message using the apply/3 BIF.

sendw(To, Msg) -> term()

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},
    receive
        Reply -> Reply
    end.

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