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Action:
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Determines if a Scheme object is a position.
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Filename:
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kern/kern_scm/pos_scm.cxx
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Syntax:
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(position? object)
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Arg Types:
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object
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scheme-object
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Returns:
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boolean
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object specifies the
scheme-object that has to be queried for a position.
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Example:
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; position?
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; Determine if a position is a position.
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(define pos1 (position 5 10 15))
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;; pos1
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(position? pos1)
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;; #t
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(position? (position 6 5 8))
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;; #t
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; Determine if a gvector is a position.
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(position? (gvector 0 0 0))
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;; #f
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; Determine if a value is a position.
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(position? -4)
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;; #f
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; Define a new position.
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(define pts (position 10 10 10))
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;; pts
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; Determine if the new position is a position.
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(position? pts)
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;; #t
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