Scheduled for Removal

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Introduction

This document list all functionality in Erlang/OTP that currently are scheduled for removal. For more information regarding the strategy regarding removal of functionality see the documentation of Support, Compatibility, Deprecations, and Removal.

OTP 30

Old aliases for type tests in guards

The type test aliases atom/1, binary/1, float/1, function/1, integer/1, list/1, number/1, pid/1, port/1, record/2, reference/1, and tuple/1, for the respective tests is_atom/1, is_binary/1, is_float/1, ..., is_tuple/2, have been deprecated since before OTP R13 and have been scheduled for removal in OTP 30. Note that these aliases could only be used as guard tests at the top level. For example, in {X, Y} when float(X), X =:= float(Y) -> ... the first use of float/1 is a type test alias, but the second use is the normal integer-to-float conversion BIF, because it occurs inside the =:=. The aliases were never recognized outside guards.

Distribution Control Messages

ALIAS_SEND and ALIAS_SEND_TT

The ALIAS_SEND and ALIAS_SEND_TT distribution control messages are as of OTP 28 deprecated and have been scheduled for removal in OTP 30. The support for these control messages are indicated by the DFLAG_ALIAS distribution flag.

The ALIAS_SEND and ALIAS_SEND_TT control messages are as of OTP 28 replaced by the ALTACT_SIG_SEND control message. Support for the ALTACT_SIG_SEND control message is indicated by the DFLAG_ALTACT_SIG distribution flag.

OTP 29

Functions Scheduled for Removal in OTP 29

  • ct_slave:_/_ (use ?CT_PEER(), or the 'peer' module instead)
  • slave:_/_ (use the 'peer' module instead)

OTP 28

Archives

The following features of archives will be removed:

  • Using archives for packaging a single application or parts of a single application into an archive file that is included in the code path.

  • All functionality to handle archives in module erl_prim_loader.

  • The -code_path_choice flag for erl.

The functionality to use a single archive file in Escripts is not deprecated and will continue to work. However, to access files in the archive, the escript:extract/2 function has to be used.

Functions Scheduled for Removal in OTP 28

OTP 27

Functions Scheduled for Removal in OTP 27

  • dbg:stop_clear/0 (use dbg:stop/0 instead)