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STDLIB
Reference Manual
Version 1.16.5

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# lib

### MODULE

lib

### MODULE SUMMARY

A number of useful library functions

### DESCRIPTION

Warning

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

### EXPORTS

flush_receive() -> void()

Flushes the message buffer of the current process.

error_message(Format, Args) -> ok

Types:

Format = atom() | string() | binary()
Args = [term()]

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

Types:

String1 = String2 = string()

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

send(To, Msg)

Types:

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)

Types:

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.