null? -- vonuvoli Definition

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Kind

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type-predicate;

Extends

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• null? (from r7rs);

Procedure signature

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Procedure variants:

• ((null |1...|) -> (true))
  • inputs:
    • a value of type null;
    • ... -- at least one time;
  • output: a value of type true;
• ((pair |1...|) -> (false))
  • inputs:
    • a value of type pair;
    • ... -- at least one time;
  • output: a value of type false;
• ((any |1...|) -> (false))
  • inputs:
    • a value of type any;
    • ... -- at least one time;
  • output: a value of type false;

Exports

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• vs:types -- (vonuvoli types positive);
• vs:lists -- (vonuvoli pairs);

Exports recursive

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• vs:types* -- (vonuvoli types);
• vs:base -- (vonuvoli base);

Referenced-types

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• null;
• true;
• pair;
• false;
• any;

Categories

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• vs:r7rs;
• vs:lists;
• vs:types;