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Special self-evaluating literal used in lambda parameter lists before optional parameters.
Special self-evaluating literal used in lambda parameter lists before the rest parameter.
Special self-evaluating literal used in lambda parameter lists before keyword parameters.
The end-of-file object.
Note that if the Scheme reader sees this literal at top-level,
it is returned literally. This is indistinguishable from
coming to the end of the input file. If you do not want to end reading,
but want the actual value of #!eof
, you should quote it.
The void value. Same as (values)
.
If this is the value of an expression in a read-eval-print loop,
nothing is printed.
The Java null
value. This is not really a Scheme value,
but is useful when interfacing to low-level Java code.