textual-port-open -- r7rs Type

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Sub-types tree

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• textual-input-port-open:
  • textual-input-port-eof;
• textual-output-port-open;

Super-types

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• textual-port;
• port-open;

Super-types recursive

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• port;

Sub-types

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• textual-input-port-open;
• textual-output-port-open;

Sub-types recursive

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• textual-input-port-eof;

Predicate

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(lambda (value) (and (textual-port? value) (or (input-port-open? value) (output-port-open? value))))

Categories

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• types-ports;

Categories recursive

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• types;