Class: XlsFunction::Evaluators::Functions::Mid

Inherits:
XlsFunction::Evaluators::FunctionEvaluator show all
Defined in:
lib/xls_function/evaluators/functions/mid.rb

Instance Method Summary collapse

Methods inherited from XlsFunction::Evaluators::FunctionEvaluator

#arg_list, #before_eval, #convert_to, create, #detect_error, #error?, #error_message, #eval_arglist, #eval_or_map_eval, #evaluate, #evaluate_or_self, #initialize, #map_eval, to_h, #to_proc, to_proc, translated_description, #variant_context

Methods included from ClassDictionary

included

Methods included from ErrorDetector

#class_info, #class_name, included, #rescue_with

Methods included from ArgumentsDefinable

included

Methods included from Evaluable

#evaluate, included

Constructor Details

This class inherits a constructor from XlsFunction::Evaluators::FunctionEvaluator

Instance Method Details

#eval ⇒ Object 



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# File 'lib/xls_function/evaluators/functions/mid.rb', line 11

def eval
  source[safe_start, length]
end

#safe_start ⇒ Object 



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# File 'lib/xls_function/evaluators/functions/mid.rb', line 15

def safe_start
  return 0 unless start.positive?

  start - 1
end