C#•3y ago

Any way to create another instance of a List<Tuple> with the same setter?

I have this within an abstract class:

        private List<Tuple<string, string>> _Headers;
        public List<Tuple<string, string>> Headers
        { 
            get  { return this._Headers; } 
            set 
            {
                foreach (Tuple<string, string> kvp in value)
                    this._Headers.Add(new Tuple<string, string>(kvp.Item1.Replace("\"", "\\\"")
                        , kvp.Item2.Replace("\"", "\\\"")));
            } 
        }

        private List<Tuple<string, string>> _Cookies;
        public List<Tuple<string, string>> Cookies
        {
            get { return this._Cookies; }
            set
            {
                foreach (Tuple<string, string> kvp in value)
                    this._Cookies.Add(new Tuple<string, string>(kvp.Item1.Replace("\"", "\\\"")
                        , kvp.Item2.Replace("\"", "\\\"")));
            }
        }

        private List<Tuple<string, string>> _Headers;
        public List<Tuple<string, string>> Headers
        { 
            get  { return this._Headers; } 
            set 
            {
                foreach (Tuple<string, string> kvp in value)
                    this._Headers.Add(new Tuple<string, string>(kvp.Item1.Replace("\"", "\\\"")
                        , kvp.Item2.Replace("\"", "\\\"")));
            } 
        }

        private List<Tuple<string, string>> _Cookies;
        public List<Tuple<string, string>> Cookies
        {
            get { return this._Cookies; }
            set
            {
                foreach (Tuple<string, string> kvp in value)
                    this._Cookies.Add(new Tuple<string, string>(kvp.Item1.Replace("\"", "\\\"")
                        , kvp.Item2.Replace("\"", "\\\"")));
            }
        }

Is there any way to simplify it? I am basically writing the exact same logic for 2 tuples, just with different names. Thanks!

26 Replies

Thinker•3y ago

Firstly, use (string, string) (ValueTuple<string, string>) instead of Tuple<string, string>

oeOP•3y ago

I'm fine with Tuple<string, string> honestly The frontend reads it fine and its not that ambiguous Anyone can deduct what header.Item1 & header.Item2 are

ero•3y ago

It's not about ambiguity or anything like that It's more efficient, less allocations, not a reference type, can be equated

oeOP•3y ago

What does equated mean? @Ero I don't see my Tuple being inneficient for my use case though

arion•3y ago

A major problem with the tuple class is that it is a reference-type with memory allocation on the heap. Due to allocations and garbage collection pressure, using it can lead to CPU-intensive operations and major performance issues in our system. The ValueTuple on the other hand is a lightweight value type object and has its memory stored on the stack. This means that with ValueTuples we can build better-optimized systems.

- https://code-maze.com/csharp-valuetuple-vs-tuple/

oeOP•3y ago

Ok I'll change to ValueTuple How could I fix the problem I'm facing in the title of this thread though?

ero•3y ago

You could select on it

oeOP•3y ago

        private List<ValueTuple<string, string>> _HeaderVT;
        public List<ValueTuple<string, string>> HeaderVT
        {
            get
            {
                return _HeaderVT;
            }
            set
            {
                foreach (var kv in _HeaderVT)
                    this._Headers.Add(new Tuple<string, string>(kv.Item1.Replace("\"", "\\\"")
                        , kv.Item2.Replace("\"", "\\\"")));
            }
        }

        private List<ValueTuple<string, string>> _HeaderVT;
        public List<ValueTuple<string, string>> HeaderVT
        {
            get
            {
                return _HeaderVT;
            }
            set
            {
                foreach (var kv in _HeaderVT)
                    this._Headers.Add(new Tuple<string, string>(kv.Item1.Replace("\"", "\\\"")
                        , kv.Item2.Replace("\"", "\\\"")));
            }
        }

now

ero•3y ago

Don't use literally ValueTuple Thinker showed you how to do it

arion•3y ago

(string, string)

ero•3y ago

List<(string, string)>

oeOP•3y ago

private List<(string, string)> _HeaderVT;
        public List<(string, string)> HeaderVT

ok but how do i create like a "reusable type" out of that like the title asks with the same setter

ero•3y ago

What do you mean? "reusable type"?

oeOP•3y ago

that was probably the wrong way to describe it but ill show you

        private List<Tuple<string, string>> _Headers;
        public List<Tuple<string, string>> Headers
        { 
            get  { return this._Headers; } 
            set 
            {
                foreach (Tuple<string, string> kvp in value)
                    this._Headers.Add(new Tuple<string, string>(kvp.Item1.Replace("\"", "\\\"")
                        , kvp.Item2.Replace("\"", "\\\"")));
            } 
        }

        private List<Tuple<string, string>> _Cookies;
        public List<Tuple<string, string>> Cookies
        {
            get { return this._Cookies; }
            set
            {
                foreach (Tuple<string, string> kvp in value)
                    this._Cookies.Add(new Tuple<string, string>(kvp.Item1.Replace("\"", "\\\"")
                        , kvp.Item2.Replace("\"", "\\\"")));
            }
        }

        private List<Tuple<string, string>> _Headers;
        public List<Tuple<string, string>> Headers
        { 
            get  { return this._Headers; } 
            set 
            {
                foreach (Tuple<string, string> kvp in value)
                    this._Headers.Add(new Tuple<string, string>(kvp.Item1.Replace("\"", "\\\"")
                        , kvp.Item2.Replace("\"", "\\\"")));
            } 
        }

        private List<Tuple<string, string>> _Cookies;
        public List<Tuple<string, string>> Cookies
        {
            get { return this._Cookies; }
            set
            {
                foreach (Tuple<string, string> kvp in value)
                    this._Cookies.Add(new Tuple<string, string>(kvp.Item1.Replace("\"", "\\\"")
                        , kvp.Item2.Replace("\"", "\\\"")));
            }
        }

imagine this used a valuetuple ignore the tuple<string> how would I prevent boilerplate here im technically writing the same setter for the two instances surely theres a way to make this shorter and cleaner?

ero•3y ago

(string, string) MakeLiteral((string, string) tuple)
{
  return (tuple.Item1.Replace(...), tuple.Item2.Replace(...));
}

// 
set => _cookies = value.Select(MakeLiteral).ToList();

(string, string) MakeLiteral((string, string) tuple)
{
  return (tuple.Item1.Replace(...), tuple.Item2.Replace(...));
}

// 
set => _cookies = value.Select(MakeLiteral).ToList();

oeOP•3y ago

is there not a way to create like a "custom" ValueTuple that contains the getters and the setters already? seems like im still repeating some code here no? @Ero

        (string, string) MakeLiteral((string, string) tuple)
        {
            return (tuple.Item1.Replace("\"", "\\\""), tuple.Item2.Replace("\"", "\\\""));
        }

        private List<(string, string)> _Header;
        public List<(string, string)> Header
        {
            get => _Header;
            set => _Header = value.Select(MakeLiteral).ToList();
        }

        private List<(string, string)> _Cookies;
        public List<(string, string)> Cookies
        {
            get => _Cookies;
            set => _Cookies = value.Select(MakeLiteral).ToList();
        }

        (string, string) MakeLiteral((string, string) tuple)
        {
            return (tuple.Item1.Replace("\"", "\\\""), tuple.Item2.Replace("\"", "\\\""));
        }

        private List<(string, string)> _Header;
        public List<(string, string)> Header
        {
            get => _Header;
            set => _Header = value.Select(MakeLiteral).ToList();
        }

        private List<(string, string)> _Cookies;
        public List<(string, string)> Cookies
        {
            get => _Cookies;
            set => _Cookies = value.Select(MakeLiteral).ToList();
        }

to be fair, its pretty short now, but just for learning purposes is there any way to do this?

Anton•3y ago

make a record struct for that

oeOP•3y ago

and how would I override the .Add method? I just realised that i can't use getters and setters because its a collection and im adding individual elements

Anton•3y ago

you're overcomplicating it

oeOP•3y ago

the problem is this doesn't work @AntonC

Anton•3y ago

also setters should be idempotent

oeOP•3y ago

because setting is not the same as adding

Anton•3y ago

do AddRange then but adding elements in a setter is just wrong it should be idempotent

oeOP•3y ago

idempotent pikawhat

        public (string, string) MakeLiteral((string, string) tuple)
        {
            return (tuple.Item1.Replace("\"", "\\\""), tuple.Item2.Replace("\"", "\\\""));
        }

        public List<(string, string)> Headers = new List<(string, string)>();
        public List<(string, string)> Cookies = new List<(string, string)>();

        public (string, string) MakeLiteral((string, string) tuple)
        {
            return (tuple.Item1.Replace("\"", "\\\""), tuple.Item2.Replace("\"", "\\\""));
        }

        public List<(string, string)> Headers = new List<(string, string)>();
        public List<(string, string)> Cookies = new List<(string, string)>();

i simplified it

            foreach (var cookie in harEntry.Request.Cookies)
                Cookies.Add(MakeLiteral((cookie.Name, cookie.Value)));

            foreach (var cookie in harEntry.Request.Cookies)
                Cookies.Add(MakeLiteral((cookie.Name, cookie.Value)));

as you said, i am complicating it this works

Anton•3y ago

make a method AddCookies that takes an IEnumerable of those tuples it means applying the same operation does nothing after each consecutive application make a named record struct instead of that tuple use the implicit new() for the field initialization too

oeOP•3y ago

Gaming

Programming

Any way to create another instance of a List<Tuple> with the same setter?

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