hasField.BasicObject: Checks if a field exists or not
Description
Checks if a field exists or not.Usage
## S3 method for class 'BasicObject}(this, field, ...)':
hasFieldundefined
- field{
vector of fields to be checked if they exists or not.}
  - ...{Not used.}
Returns a
logical vector indicating for each field if it exists or not.
[object Object]
To get the fields of an Object, see *getFields().
  For more extensive information about the fields in an Object see
  *ll().
  For more information see BasicObject.
programming
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