object

streamvars

Stream variables (supporting logical, backtracable, adding and retrieving of terms).

Author: Nobukuni Kino and Paulo Moura
Version: 1.3
Date: 2019/6/15
Compilation flags:
static, context_switching_calls
Dependencies:
(none)
Remarks:
(none)

Public predicates

new/1

Makes Variable a stream variable. Initial state will be empty.

Compilation flags:
static
Template:
new(Variable)
Mode and number of proofs:
new(--streamvar) - one
Exceptions:
Variable is not a variable:
type_error(variable,Variable)

new/2

Makes Variable a stream variable and sets its initial state to Value.

Compilation flags:
static
Template:
new(Variable,Value)
Mode and number of proofs:
new(--streamvar,@nonvar) - one
Exceptions:
Variable is not a variable:
type_error(variable,Variable)

(<=)/2

Sets the state of the stream variable Variable to Value (initializing the variable if needed).

Compilation flags:
static
Template:
Variable<=Value
Mode and number of proofs:
(?streamvar)<=(@nonvar) - one

(=>)/2

Unifies Value with the current state of the stream variable Variable.

Compilation flags:
static
Template:
Variable=>Value
Mode and number of proofs:
(+streamvar)=>(?nonvar) - zero_or_one

Operators

op(100,xfx,<=)

Scope:
public

op(100,xfx,=>)

Scope:
public