b_getval/2

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  - Built-in Predicates
    - Global variables
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Availability:built-in

b_getval(+Name, -Value)

Get the value associated with the global variable Name and unify it with Value. Note that this unification may further instantiate the value of the global variable. If this is undesirable the normal precautions (double negation or copy_term/2) must be taken. The b_getval/2 predicate generates errors if Name is not an atom or the requested variable does not exist.