• Skullgrid@lemmy.world
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    5 months ago

    Falsy zero? What’s wrong with that, 1 is true and 0 is false. I thought that was standard logic?

    • joneskind@lemmy.world
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      5 months ago

      in javascript a property is truthy if it exists

      myThing.property = "some string"
      
      if (myThing.property) { // true
        // do something
      }
      

      It works with everything except of course for falsy values

      myThing.number = someNumberThatShouldNotBeEqualToZero
      
      if (myThing.number) {
        // do something very important with that number that should not be equal to zero
      }
      
      // This can fail at anytime without warning
      

      So you’ve got to be extra careful with that logic when you’re dealing with numbers.

      I am not saying it’s wrong though. I’m saying it’s often annoying.

      • Skullgrid@lemmy.world
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        5 months ago

        ah ok , I think I write this a bit more verbose when using other languages, instead of

        if(thing)
        {
           stuff;
        }
        
        

        I do

        
        if(thing != null)
        {
           stuff;
        }
        

        so checking for numbers being truthy & existing didn’t seem like an issue