lib/dydx/helper.rb in dydx-0.0.9 vs lib/dydx/helper.rb in dydx-0.1.0

@@ -37,15 +37,15 @@
     def inverse_super_ope(operator)
       inverse_ope(super_ope(operator))
     end
 
     def is_num?
-      (is_a?(Num) || is_a?(Fixnum)) || (is_a?(Inverse) && x.is_num?)
+      (is_a?(Num) || is_a?(Fixnum) || is_a?(Float)) || (is_a?(Inverse) && x.is_num?)
     end
 
     def is_0?
-      self == 0 || (is_a?(Num) && n == 0)
+      [0, 0.0].include?(self) || (is_a?(Num) && n.is_0?)
     end
 
     def is_1?
       self == 1 || (is_a?(Num) && n == 1)
     end
@@ -92,24 +92,9 @@
     OP_SYM_STR.each do |operator_name, operator|
       define_method("#{operator_name}?") do
         is_a?(Formula) && (@operator == operator)
         # is_a?(Inverse) && self.operator == operator
       end
-    end
-
-    def to_str(sym)
-      OP_SYM_STR.key(sym)
-    end
-
-    def str_to_sym(str)
-      OP_SYM_STR[str]
-    end
-
-    def to_str_inv(operator)
-      {
-        subtrahend: :+,
-        divisor:    :*
-      }.key(operator)
     end
 
     def rest(f_or_g)
       ([:f, :g] - [f_or_g]).first
     end