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How to use ReplaceAll on an expression that contains a rule



The 2019 Stack Overflow Developer Survey Results Are In
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)Replacement rule only matches part of expressionHow can I avoid this ReplaceAll trap?StringReplace, ReplaceAll and Rule interact in a bizarre wayReplaceAll in an expression including large InterpolatingFunctionWhen I use Rule, why doesn't this work?How to apply substitution when expression contains powers of the quanityHow to ReplaceAll except within specified headsIs there a limit to ReplaceAll rule list?Apply replacement rules to all levelsHow to use ReplaceAll and RuleDelayed with an Association?










6












$begingroup$


I know I have seen this before but can't seem to locate it today.



I am trying to take an expression that has some rules in it and replace one of that parts that contain a rule using ReplaceAll



For a simple example consider:



testExpression = "stuff", Axes -> False, True
(* "stuff", Axes -> False, True *)


and I want to replace the



Axes -> False, True


with



Axes -> False


I have tried



testExpression /. 
Hold[Axes -> False, True] -> Hold[Axes -> False]
(* "stuff", Axes -> False, True *)


as well as



testExpression /. 
Hold[Rule[Axes , False, True]] -> Hold[Rule[Axes , False]]
(* "stuff", Axes -> False, True *)


I promise to add this to my set of notes if someone could kindly enlighten me.










share|improve this question









$endgroup$
















    6












    $begingroup$


    I know I have seen this before but can't seem to locate it today.



    I am trying to take an expression that has some rules in it and replace one of that parts that contain a rule using ReplaceAll



    For a simple example consider:



    testExpression = "stuff", Axes -> False, True
    (* "stuff", Axes -> False, True *)


    and I want to replace the



    Axes -> False, True


    with



    Axes -> False


    I have tried



    testExpression /. 
    Hold[Axes -> False, True] -> Hold[Axes -> False]
    (* "stuff", Axes -> False, True *)


    as well as



    testExpression /. 
    Hold[Rule[Axes , False, True]] -> Hold[Rule[Axes , False]]
    (* "stuff", Axes -> False, True *)


    I promise to add this to my set of notes if someone could kindly enlighten me.










    share|improve this question









    $endgroup$














      6












      6








      6





      $begingroup$


      I know I have seen this before but can't seem to locate it today.



      I am trying to take an expression that has some rules in it and replace one of that parts that contain a rule using ReplaceAll



      For a simple example consider:



      testExpression = "stuff", Axes -> False, True
      (* "stuff", Axes -> False, True *)


      and I want to replace the



      Axes -> False, True


      with



      Axes -> False


      I have tried



      testExpression /. 
      Hold[Axes -> False, True] -> Hold[Axes -> False]
      (* "stuff", Axes -> False, True *)


      as well as



      testExpression /. 
      Hold[Rule[Axes , False, True]] -> Hold[Rule[Axes , False]]
      (* "stuff", Axes -> False, True *)


      I promise to add this to my set of notes if someone could kindly enlighten me.










      share|improve this question









      $endgroup$




      I know I have seen this before but can't seem to locate it today.



      I am trying to take an expression that has some rules in it and replace one of that parts that contain a rule using ReplaceAll



      For a simple example consider:



      testExpression = "stuff", Axes -> False, True
      (* "stuff", Axes -> False, True *)


      and I want to replace the



      Axes -> False, True


      with



      Axes -> False


      I have tried



      testExpression /. 
      Hold[Axes -> False, True] -> Hold[Axes -> False]
      (* "stuff", Axes -> False, True *)


      as well as



      testExpression /. 
      Hold[Rule[Axes , False, True]] -> Hold[Rule[Axes , False]]
      (* "stuff", Axes -> False, True *)


      I promise to add this to my set of notes if someone could kindly enlighten me.







      replacement






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 31 at 16:25









      Jack LaVigneJack LaVigne

      12k21632




      12k21632




















          2 Answers
          2






          active

          oldest

          votes


















          8












          $begingroup$

          Here are a couple possibilities:



          testExpression /. Rule[Axes, False, True] -> Axes -> False
          testExpression /. HoldPattern[Axes -> False, True] -> Axes -> False



          "stuff", Axes -> False



          "stuff", Axes -> False







          share|improve this answer









          $endgroup$




















            6












            $begingroup$

            I think this is just a matter of getting the parentheses right



            testExpression /. (Axes -> False, True) -> (Axes -> False)
            (* "stuff", Axes -> False *)





            share|improve this answer









            $endgroup$












            • $begingroup$
              I'd have posted this too. (+1)
              $endgroup$
              – J. M. is away
              Mar 31 at 22:21










            • $begingroup$
              Wish I could accept them both
              $endgroup$
              – Jack LaVigne
              Apr 1 at 14:29











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            2 Answers
            2






            active

            oldest

            votes








            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            8












            $begingroup$

            Here are a couple possibilities:



            testExpression /. Rule[Axes, False, True] -> Axes -> False
            testExpression /. HoldPattern[Axes -> False, True] -> Axes -> False



            "stuff", Axes -> False



            "stuff", Axes -> False







            share|improve this answer









            $endgroup$

















              8












              $begingroup$

              Here are a couple possibilities:



              testExpression /. Rule[Axes, False, True] -> Axes -> False
              testExpression /. HoldPattern[Axes -> False, True] -> Axes -> False



              "stuff", Axes -> False



              "stuff", Axes -> False







              share|improve this answer









              $endgroup$















                8












                8








                8





                $begingroup$

                Here are a couple possibilities:



                testExpression /. Rule[Axes, False, True] -> Axes -> False
                testExpression /. HoldPattern[Axes -> False, True] -> Axes -> False



                "stuff", Axes -> False



                "stuff", Axes -> False







                share|improve this answer









                $endgroup$



                Here are a couple possibilities:



                testExpression /. Rule[Axes, False, True] -> Axes -> False
                testExpression /. HoldPattern[Axes -> False, True] -> Axes -> False



                "stuff", Axes -> False



                "stuff", Axes -> False








                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Mar 31 at 16:31









                Carl WollCarl Woll

                73.7k398192




                73.7k398192





















                    6












                    $begingroup$

                    I think this is just a matter of getting the parentheses right



                    testExpression /. (Axes -> False, True) -> (Axes -> False)
                    (* "stuff", Axes -> False *)





                    share|improve this answer









                    $endgroup$












                    • $begingroup$
                      I'd have posted this too. (+1)
                      $endgroup$
                      – J. M. is away
                      Mar 31 at 22:21










                    • $begingroup$
                      Wish I could accept them both
                      $endgroup$
                      – Jack LaVigne
                      Apr 1 at 14:29















                    6












                    $begingroup$

                    I think this is just a matter of getting the parentheses right



                    testExpression /. (Axes -> False, True) -> (Axes -> False)
                    (* "stuff", Axes -> False *)





                    share|improve this answer









                    $endgroup$












                    • $begingroup$
                      I'd have posted this too. (+1)
                      $endgroup$
                      – J. M. is away
                      Mar 31 at 22:21










                    • $begingroup$
                      Wish I could accept them both
                      $endgroup$
                      – Jack LaVigne
                      Apr 1 at 14:29













                    6












                    6








                    6





                    $begingroup$

                    I think this is just a matter of getting the parentheses right



                    testExpression /. (Axes -> False, True) -> (Axes -> False)
                    (* "stuff", Axes -> False *)





                    share|improve this answer









                    $endgroup$



                    I think this is just a matter of getting the parentheses right



                    testExpression /. (Axes -> False, True) -> (Axes -> False)
                    (* "stuff", Axes -> False *)






                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Mar 31 at 22:03









                    mikadomikado

                    6,8421929




                    6,8421929











                    • $begingroup$
                      I'd have posted this too. (+1)
                      $endgroup$
                      – J. M. is away
                      Mar 31 at 22:21










                    • $begingroup$
                      Wish I could accept them both
                      $endgroup$
                      – Jack LaVigne
                      Apr 1 at 14:29
















                    • $begingroup$
                      I'd have posted this too. (+1)
                      $endgroup$
                      – J. M. is away
                      Mar 31 at 22:21










                    • $begingroup$
                      Wish I could accept them both
                      $endgroup$
                      – Jack LaVigne
                      Apr 1 at 14:29















                    $begingroup$
                    I'd have posted this too. (+1)
                    $endgroup$
                    – J. M. is away
                    Mar 31 at 22:21




                    $begingroup$
                    I'd have posted this too. (+1)
                    $endgroup$
                    – J. M. is away
                    Mar 31 at 22:21












                    $begingroup$
                    Wish I could accept them both
                    $endgroup$
                    – Jack LaVigne
                    Apr 1 at 14:29




                    $begingroup$
                    Wish I could accept them both
                    $endgroup$
                    – Jack LaVigne
                    Apr 1 at 14:29

















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