<commit_before>module Dydx
  module Helper
    OP_SYM_STR = {
      addition:       :+,
      subtraction:    :-,
      multiplication: :*,
      exponentiation: :^
    }

    def is_0?
      self == 0 || (is_a?(Num) && n == 0) || (subtrahend? && x.is_0?)
    end

    def is_1?
      self == 1 || (is_a?(Num) && n == 1) || (divisor? && x.is_1?)
    end

    def is_minus1?
      self == -1 || (is_a?(Num) && n == -1)
    end

    def is_num?
      if is_a?(Inverse)
        x.is_num?
      else
        is_a?(Num) || is_a?(Fixnum)
      end
    end

    def combinable?(x, operator)
      case operator<commit_msg>Improve #is_0? and #is_1?<commit_after>module Dydx
  module Helper
    OP_SYM_STR = {
      addition:       :+,
      subtraction:    :-,
      multiplication: :*,
      exponentiation: :^
    }

    def is_0?
      self == 0 || (is_a?(Num) && n == 0)
    end

    def is_1?
      self == 1 || (is_a?(Num) && n == 1)
    end

    def is_minus1?
      self == -1 || (is_a?(Num) && n == -1)
    end

    def is_num?
      if is_a?(Inverse)
        x.is_num?
      else
        is_a?(Num) || is_a?(Fixnum)
      end
    end

    def combinable?(x, operator)
      case operator
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{'dir': 'git-commits-cleaned', 'id': '763234', 'n_tokens_mistral': 484, 'n_tokens_neox': 475, 'n_words': 102}