jpl:jpl_array_to_length/2

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Predicate jpl_array_to_length/2

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jpl
- jpl.pl -- A Java interface for SWI Prolog 7.x

jpl_array_to_length(+Array:jref, -Length:integer)

Array should be a JPL reference to a Java array of any type.

Length is the length of that array. This is a utility predicate, defined thus:

jpl_array_to_length(A, N) :-
    (   jpl_ref_to_type(A, array(_))
    ->  jGetArrayLength(A, N)
    ).