Module: CAS::Help

Defined in:
lib/Mr.CAS.rb

Overview

Support functions are in this separate Helper class

Class Method Summary collapse

Class Method Details

.assert(obj, type) ⇒ Object

Check input obj.class against a type class raises an ArgumentError if check fails

* **argument**: object to be cecked
* **argument**: type to be checked against
* **returns**: `TrueClass`, or raises an `ArgumentError`

Raises:

  • (ArgumentError) 


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# File 'lib/Mr.CAS.rb', line 35

def self.assert(obj, type)
  raise ArgumentError, "required #{type}, received #{obj.class}" unless obj.is_a? type
  return true
end

.assert_name(obj) ⇒ Object

Check if input object is feasible to be a name of a CAS::Variable or a CAS::Function raise an ArgumentError if the check fails. To be feasible the object must be a String instance or Symbol instance

* **argument**: object to be checked
* **returns**: `TrueClass` or raises `ArgumentError`

Raises:

  • (ArgumentError) 


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# File 'lib/Mr.CAS.rb', line 46

def self.assert_name(obj)
  raise ArgumentError, "Input name must be a String/Symbol" unless [Symbol, String].include? obj.class
  return true
end