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Action:
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Determines if a Scheme object is a shell.
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Filename:
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kern/kern_scm/ent_scm.cxx
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Syntax:
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(shell? 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
#t if the specified object is a shell; otherwise, it returns #f.
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object specifies the
scheme-object to be queried for a shell.
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Example:
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; shell?
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; Create a solid block.
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(define block1
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(solid:block (position 0 0 0) (position 8 8 8)))
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;; block1
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; Get a list of the block's shells.
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(define shells1
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(entity:shells block1))
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;; shells1
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; Determine if one of the shells
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; is actually a shell.
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(shell? (car shells1))
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;; #t
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; Determine if the block is a shell.
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(shell? block1)
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;; #f
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