table of contents
other versions
- jessie 1:17.3-dfsg-4+deb8u2
- jessie-backports 1:19.2.1+dfsg-2+deb9u1~bpo8+1
- stretch 1:19.2.1+dfsg-2+deb9u2
- testing 1:21.2.5+dfsg-1
- unstable 1:21.2.6+dfsg-1
- experimental 1:22.0~rc1+dfsg-1
erl_internal(3erl) | Erlang Module Definition | erl_internal(3erl) |
NAME¶
erl_internal - Internal Erlang definitions.DESCRIPTION¶
This module defines Erlang BIFs, guard tests, and operators. This module is only of interest to programmers who manipulate Erlang code.EXPORTS¶
arith_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is an arithmetic operator, otherwise
false.
bif(Name, Arity) -> boolean()
Types:
Name = atom()
Arity = arity()
Returns true if Name/Arity is an Erlang BIF that is automatically
recognized by the compiler, otherwise false.
bool_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is a Boolean operator, otherwise
false.
comp_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is a comparison operator, otherwise
false.
guard_bif(Name, Arity) -> boolean()
Types:
Name = atom()
Arity = arity()
Returns true if Name/Arity is an Erlang BIF that is allowed in
guards, otherwise false.
list_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is a list operator, otherwise
false.
op_type(OpName, Arity) -> Type
Types:
OpName = atom()
Arity = arity()
Type = arith | bool | comp | list | send
Returns the Type of operator that OpName/Arity belongs to, or
generates a function_clause error if it is not an operator.
send_op(OpName, Arity) -> boolean()
Types:
OpName = atom()
Arity = arity()
Returns true if OpName/Arity is a send operator, otherwise
false.
type_test(Name, Arity) -> boolean()
Types:
Name = atom()
Arity = arity()
Returns true if Name/Arity is a valid Erlang type test, otherwise
false.
stdlib 3.2 | Ericsson AB |