class Eqn::Terminal::Variable
Node class for a variable.
Public Instance Methods
value(vars = {})
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# File lib/eqn/terminal.rb, line 5 def value(vars = {}) val = vars[text_value.to_sym] raise NoVariableValueError, "No value given for: #{text_value}" unless val raise NonNumericVariableError, "Variable #{text_value} value is nonnumeric: #{val}" unless val.is_a?(Numeric) val end