C#•3y ago

❔ Can't get around on how to instantiate this.

I can't get around on how to instantiate this in my service.cs so i can call it properly in my controller. Relevant code below. https://paste.mod.gg/kocfivzcagoc/0

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28 Replies

phaseshift•3y ago

Word frequency result is not word frequency

HerculesOP•3y ago

Yes i know they are two different types but I'd like to be able to generate Word frequency result https://paste.mod.gg/kocfivzcagoc/0

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phaseshift•3y ago

New one up

HerculesOP•3y ago

My Challenge is making below to return - Word frequency result @phaseshift I've tried instantiate Lists

var frequencies = 
                dict.OrderByDescending(x => x.Value)
                    .Select(x => new WordFrequency(x.Key, x.Value))
                    .Take(n)
                    .ToList();

var frequencies = 
                dict.OrderByDescending(x => x.Value)
                    .Select(x => new WordFrequency(x.Key, x.Value))
                    .Take(n)
                    .ToList();

phaseshift•3y ago

You don't even have new wordfreqresult

HerculesOP•3y ago

Shouldn't something like this work?

var frequencies = 
                dict.OrderByDescending(x => x.Value)
                    .Select(x => new WordFrequencyResult(new List<List<WordFrequency>>()
                    {
                        new WordFrequency(x.Key, x.Value)
                    }))
                    .Take(n)
                    .ToList();

var frequencies = 
                dict.OrderByDescending(x => x.Value)
                    .Select(x => new WordFrequencyResult(new List<List<WordFrequency>>()
                    {
                        new WordFrequency(x.Key, x.Value)
                    }))
                    .Take(n)
                    .ToList();

phaseshift•3y ago

Doubt it. Isn't 'result' meant to contain the lists?

HerculesOP•3y ago

I do have a

public record WordFrequencyResult(List<List<WordFrequency>>? ListOfWordFrequency);

public record WordFrequencyResult(List<List<WordFrequency>>? ListOfWordFrequency);

Result is meant to return the values i wish to give as output in my endpoint through Response.cs

phaseshift•3y ago

Yeah, so that should be the last thing you new. Putting it inside linq select is going to make a collection of 'result' var lists = linq stuff Var result = new Result(lists)

HerculesOP•3y ago

Here is a another example but if works fine difference are the type in Result.cs https://paste.mod.gg/tpnvxlicymuu/0

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HerculesOP•3y ago

Exactly i need to return a List<WordFrequency> with linq. But when i do .Select(x => new (starting my instansiations) ) // i get wrong.

phaseshift•3y ago

What type does your linq statement return?

HerculesOP•3y ago

List<WordFrequency> right now.

foreach (var dict in stringResult)
{
  var frequencies = 
                dict.OrderByDescending(x => x.Value)
                    .Select(x => new WordFrequency(x.Key, x.Value))
                    .Take(n)
                    .ToList();
}

foreach (var dict in stringResult)
{
  var frequencies = 
                dict.OrderByDescending(x => x.Value)
                    .Select(x => new WordFrequency(x.Key, x.Value))
                    .Take(n)
                    .ToList();
}

phaseshift•3y ago

Right. And what does result take? Not that. So you need to figure out how to nest another list

HerculesOP•3y ago

If we break down the question. It would be, how do would you instantiate

List<List<WordFrequencyResult>>

List<List<WordFrequencyResult>>

WordFrequencyResult takes

List<List<WordFrequency>>? ListOfWordFrequency

List<List<WordFrequency>>? ListOfWordFrequency

And WordFrequency is

public record WordFrequency(string Word, long FrequencyCount);

public record WordFrequency(string Word, long FrequencyCount);

phaseshift•3y ago

What. You want list of list of result? That's four nested lists.

HerculesOP•3y ago

Yes otherwise i'll break architectual pattern that i've done. like the Authentication link i sent before

phaseshift•3y ago

Well it's dumb. But it's not complicated Frequencies is only one list So you need another list before you make a result

HerculesOP•3y ago

Yes. Im having incompetent problems on getting that list.

phaseshift•3y ago

You make the list before the loop where you make frequencies Then inside that loop, you added frequencies to it Your problem is literally the same as how to add numbers to a list Just replace'numbers' with 'some other list'

HerculesOP•3y ago

  var test = new List<List<WordFrequencyResult>>();
        {
            new List<WordFrequencyResult>()
            {
                new WordFrequencyResult( 
                    new List<List<WordFrequency>>()
                    {
                        new List<WordFrequency>()
                        {
                            new WordFrequency("s", 2)
                        }
                    }
                    )
            };
        };

  var test = new List<List<WordFrequencyResult>>();
        {
            new List<WordFrequencyResult>()
            {
                new WordFrequencyResult( 
                    new List<List<WordFrequency>>()
                    {
                        new List<WordFrequency>()
                        {
                            new WordFrequency("s", 2)
                        }
                    }
                    )
            };
        };

4 lists yes you're right.

phaseshift•3y ago

So problem is solved? You know how to do it

HerculesOP•3y ago

Nope, This gave me List<List<List<WordFrequencyResult>>>

phaseshift•3y ago

'this'?

HerculesOP•3y ago

The code above xD

phaseshift•3y ago

How You just need to pay more attention

HerculesOP•3y ago

Yes, I managed to solve it now, all thanks to you - it's about thinking and working on single things and not over complicate it. And you actually helped me realize that my achitecture is dumb. but i think if my application was much much bigger it wouldn't be so dumb

Accord•2y ago

Looks like nothing has happened here. I will mark this as stale and this post will be archived until there is new activity.

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❔ Can't get around on how to instantiate this.