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Action:
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Determines whether or not a Scheme object is of the
law Scheme data type.
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Filename:
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kern/kern_scm/law_scm.cxx
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Syntax:
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(law? 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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Description:
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This extension returns a
#t if the given
object is a
law Scheme data type. Otherwise, it returns a
#f.
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object specifies a
scheme-object that has to be queried for a law.
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Example:
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; law?
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; Create a new law.
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(define law1 (law "x+x^2-cos(x)"))
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;; law1
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; Test to see if item is a law Scheme data type.
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(law? law1)
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;; #t
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; Evaluate the given law at 1.5 radians
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(define answer (law:eval law1 1.5))
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;; answer
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; Test to see if item is a law Scheme data type.
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(law? answer)
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;; #t
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; This is true, because real numbers can be laws.
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