HelpWizard Pages ReferenceManual1 Smalltalk/en

Input
Report an error, if the pin has no value.

• inputPinName value
  fetch the value from an input pin; reports an error, if there is no value.

• inputPinName valueIfPresent
  if the pin has a value, fetch it. Otherwise return nil.

• inputPinName valueIfAbsent: defaultValue
  if the pin has a value, fetch it. Otherwise return defaultValue.

Testing

• inputPinName hasValue
  true if the input pin has a value; false if not

Output

• outputPinName value: valueWritten
  send a value to the output pin. The output pin's type must be compatible.

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