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    (Possible) Breaking change: local variables references inside nested function definitions

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    • ustkU
      ustk @Christoph Hart
      last edited by

      @Christoph-Hart Can't capture anonymous expression

      Might be just normal, I'm not familiar enough with lambdas...

      for (t in things)
      {
      	bgPnl.setPaintRoutine(function [t](g){}); // Can't capture anonymous expressions
      
      	var thing = t;
      	bgPnl.setPaintRoutine(function [thing](g){}); // ok
      }
      

      Just for my personal knowledge, why is it anonymous?

      Can't help pressing F5 in the forum...

      d.healeyD Christoph HartC 2 Replies Last reply Reply Quote 0
      • d.healeyD
        d.healey @ustk
        last edited by d.healey

        @ustk t is anonymous, as in you didn't declare it. HISE just magicked it out of a nowhere when you needed it for your loop. What about this approach?

        function myPaintRoutine(g)
        {
            var things = this.data.things;
        }
        
        bgPnl.data.things = things;
        bgPnl.setPaintRoutine(myPaintRoutine); 
        

        Libre Wave - Freedom respecting instruments and effects
        My Patreon - HISE tutorials
        YouTube Channel - Public HISE tutorials

        ustkU 1 Reply Last reply Reply Quote 1
        • ustkU
          ustk @d.healey
          last edited by

          @d-healey Thanks for clarifying
          Yeah, I can find a way to o what I need, it's just that for once I could find a purpose for using lambdas, disillusion... :)

          Can't help pressing F5 in the forum...

          d.healeyD 1 Reply Last reply Reply Quote 0
          • d.healeyD
            d.healey @ustk
            last edited by

            @ustk Here's the kind of thing I use lambdas for

            inline function promptForSomething(name)
            {
                Engine.showYesNoWindow("Would you like to view " + name + "?", function [name](response)
                {
                    if (response)
                        show(name);
                });
            }

            Libre Wave - Freedom respecting instruments and effects
            My Patreon - HISE tutorials
            YouTube Channel - Public HISE tutorials

            ustkU 1 Reply Last reply Reply Quote 1
            • ustkU
              ustk @d.healey
              last edited by

              @d-healey In fact I'm mistaken as I used it in another project the same way you do:

              inline function ondriverCbControl(component, value)
              {
              	Engine.showYesNoWindow(Titles.ChangeDriver, Messages.WarningDeleteCaptures, function[value](result)
              	{
              		if (result)
              		{
              			Settings.setAudioDeviceType(drivers[value-1]);
              		}
              	});
              };
              driverCb.setControlCallback(ondriverCbControl);
              

              But it's the first time I try in a for loop though...

              Can't help pressing F5 in the forum...

              1 Reply Last reply Reply Quote 1
              • Christoph HartC
                Christoph Hart @ustk
                last edited by

                @ustk David is right, the iterator variable is not part of the function scope that can be passed to the lambda. Not sure if this is an oversight or if there is a good reason, but I always create variables like in the second line too. Think of it as picking up a nice bouquet in order to surprise your lambda friend.

                ustkU 1 Reply Last reply Reply Quote 2
                • ustkU
                  ustk @Christoph Hart
                  last edited by

                  @Christoph-Hart Love the analogy 🌻 :)

                  Can't help pressing F5 in the forum...

                  Christoph HartC 1 Reply Last reply Reply Quote 0
                  • Christoph HartC
                    Christoph Hart @ustk
                    last edited by

                    @ustk Yeah, it was definitely worth googling what that phrase sounds like in English...

                    ustkU 1 Reply Last reply Reply Quote 0
                    • ustkU
                      ustk @Christoph Hart
                      last edited by

                      @Christoph-Hart bouquet is a french word :)

                      Can't help pressing F5 in the forum...

                      d.healeyD 1 Reply Last reply Reply Quote 0
                      • d.healeyD
                        d.healey @ustk
                        last edited by

                        @ustk https://www.youtube.com/watch?v=FboWtJiNYro

                        Libre Wave - Freedom respecting instruments and effects
                        My Patreon - HISE tutorials
                        YouTube Channel - Public HISE tutorials

                        ustkU Adam_GA 2 Replies Last reply Reply Quote 3
                        • clevername27C
                          clevername27
                          last edited by

                          Some of us were already quite familiar this one. 😭😭😭

                          1 Reply Last reply Reply Quote 0
                          • ustkU
                            ustk @d.healey
                            last edited by

                            @d-healey Oh boy I miss so much that brit humour 🤣

                            Can't help pressing F5 in the forum...

                            1 Reply Last reply Reply Quote 0
                            • Adam_GA
                              Adam_G @d.healey
                              last edited by

                              @d-healey do you think its possible having this in my project is some how causing my note release issue?

                              d.healeyD 1 Reply Last reply Reply Quote 0
                              • d.healeyD
                                d.healey @Adam_G
                                last edited by

                                @Adam_G No because that issue is happening in a project without any scripting

                                Libre Wave - Freedom respecting instruments and effects
                                My Patreon - HISE tutorials
                                YouTube Channel - Public HISE tutorials

                                1 Reply Last reply Reply Quote 0
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