• 6 Posts
  • 30 Comments
Joined 1 year ago
cake
Cake day: July 17th, 2023

help-circle





  • I dint know many OO languages that don’t have a useless toString on string types.

    Well, that’s just going to be one of those “it is what it is” things in an OO language if your base class has a toString()-equivalent. Sure, it’s probably useless for a string, but if everything’s an object and inherits from some top-level Object class with a toString() method, then you’re going to get a toString() method in strings too. You’re going to get a toString() in everything; in JS even functions have a toString() (the output of which depends on the implementation):

    In a dynamically typed language, if you know that everything can be turned into a string with toString() (or the like), then you can just call that method on any value you have and not have to worry about whether it’ll hurl at runtime because eg. Strings don’t have a toString because it’d technically be useless.


  • Everything that’s an Object is going to either inherit Object.prototype.toString() (mdn) or provide its own implementation.

    A String is an Object, so it’s going to have a toString() method. It doesn’t inherit Object’s implementation, but provides one that’s sort of a no-op / identity function but not quite.

    So, the thing is that when you say const someString = "test string", you’re not actually creating a new String object instance and assigning it to someString, you’re creating a string (lowercase s!) primitive and assigning it to someString:

    Compare this with creating a new String("bla"):

    In Javascript, primitives don’t actually have any properties or methods, so when you call someString.toString() (or call any other method or access any property on someString), what happens is that someString is coerced into a String instance, and then toString() is called on that. Essentially it’s like going new String(someString).toString().

    Now, what String.prototype.toString() (mdn) does is it returns the underlying string primitive and not the String instance itself.

    Why? Fuckin beats me, I honestly can’t remember what the point of this is because I haven’t been elbow-deep in Javascript in years, but regardless this is the logic behind String’s toString().















  • I grew up in a bit of a sketchy neighborhood and up until my mid 20’s all my jobs were the sort where everybody cursed a lot, plus Finns tend to curse a lot in general.

    I absolutely have not kept my cursing out of repositories, although looking at my last work project which had about 33000 lines all in all (maybe 2/3 written by me) when including comments, I was surprised to find it only 4 had “shits” and 6 “fucks”. One line in an example & test file had both:

    	zap.NewExample().Sugar().Errorw("welp, shit's fucked",
    		"IsBadRequest", IsBadRequest(err),
    		Field(err))
    

    and then there’s some comments like

    // - turn the unsafe.Pointer into a *[8]byte, allowed due to unsafe pointer fuckery
    
    // FIXME: this is just to make cli tool usage easier. It's a horrible fucking hack and should be
    //  nuked from orbit
    
    // FIXME: get rid of all this gorilla legacy bullshit. Could start by getting rid of the needless
    // Interface type