C#•2y ago

how can i add a function/method to a class that can be changed upon construction?

namespace Elfin
{
    public class ElfinCommand
    {
        public string Name;

        public ElfinCommand(ElfinCommand data)
        {
            this.Name = data.Name;
            this.Respond = data.Respond;
        }
    }
}

namespace Elfin
{
    public class ElfinCommand
    {
        public string Name;

        public ElfinCommand(ElfinCommand data)
        {
            this.Name = data.Name;
            this.Respond = data.Respond;
        }
    }
}

i'm trying to make a command class but how can i make it so i can provide a response function to the command when i construct a new one? (this.Respond)

23 Replies

thieved•2y ago

im new to C# by the way oh hey moles i remember u mentioned delegates but im not sure how id use it.. elaborate

        public string Name;
        public delegate Respond;

        public string Name;
        public delegate Respond;

i tried this but it says

thieved•2y ago

oh maybe i should provide a return type too lol now how can i change it in the construction?

        public ElfinCommand(ElfinCommand data)
        {
            this.Name = data.Name;
            this.Respond = data.Respond;
        }

        public ElfinCommand(ElfinCommand data)
        {
            this.Name = data.Name;
            this.Respond = data.Respond;
        }

i cant do this.Respond = data.Respond;

thieved•2y ago

thieved•2y ago

i see so how can i do what im looking for? i need to be able to create a method/change it upon construction example if you can? i hat eto be a bother im just not familiar with these concepts lol

Florian Voß•2y ago

lambda goes Hmm

thieved•2y ago

i understand how to create a delegate now but is there a way to process it this way

using DSharpPlus.Entities;

namespace Elfin
{
    public class ElfinCommand
    {
        public string Name;
        public delegate void Respond(DiscordMessage Message);

        public ElfinCommand(ElfinCommand CommandData)
        {
            this.Name = CommandData.Name;
            this.Respond = CommandData.Respond;
        }
    }
}

using DSharpPlus.Entities;

namespace Elfin
{
    public class ElfinCommand
    {
        public string Name;
        public delegate void Respond(DiscordMessage Message);

        public ElfinCommand(ElfinCommand CommandData)
        {
            this.Name = CommandData.Name;
            this.Respond = CommandData.Respond;
        }
    }
}

? i want to assign it in the constructor if possible oh ok

Florian Voß•2y ago

how about using Action<T> ye

thieved•2y ago

what is Action? oh

Florian Voß•2y ago

there are differen delegate types predefined Func, Predicate, Action read online for reference action is void ye

thieved•2y ago

using DSharpPlus.Entities;

namespace Elfin
{
    public class ElfinCommand
    {
        public string Name;
        public Action<DiscordMessage> Respond;

        public ElfinCommand(ElfinCommand CommandData)
        {
            this.Name = CommandData.Name;
            this.Respond = CommandData.Respond;
        }
    }
}

using DSharpPlus.Entities;

namespace Elfin
{
    public class ElfinCommand
    {
        public string Name;
        public Action<DiscordMessage> Respond;

        public ElfinCommand(ElfinCommand CommandData)
        {
            this.Name = CommandData.Name;
            this.Respond = CommandData.Respond;
        }
    }
}

looks good?

Florian Voß•2y ago

and they all exist with overloads up to like 18 parameters or smth like Func<T1, T2, T3........., TResult>

thieved•2y ago

[Command("greet")]

[Command("greet")]

is this a macro? or something of the sort its used in D#+ to create new commands

Florian Voß•2y ago

we call those attribute

thieved•2y ago

o ah okay so now if i want to make a new command how do i write the response function? like to fit the action type

                Respond = (DiscordMessage Message) => {

                }

                Respond = (DiscordMessage Message) => {

                }

figured it out

using DSharpPlus.Entities;

namespace Elfin.Commands
{
    public class ElfinCommand
    {
        public required string Name;
        public required Action<DiscordMessage> Respond;

        public ElfinCommand()
        { }

        public ElfinCommand(ElfinCommand CommandData)
        {
            this.Name = CommandData.Name;
            this.Respond = CommandData.Respond;
        }
    }

    public class ElfinClient
    {
        public ElfinCommand[] Commands = {
            new ElfinCommand() {
                Name = "ping",
                Respond = async (DiscordMessage Message) => {
                    await Message.RespondAsync("Pong!");
                }
            }
        };
    }
}

using DSharpPlus.Entities;

namespace Elfin.Commands
{
    public class ElfinCommand
    {
        public required string Name;
        public required Action<DiscordMessage> Respond;

        public ElfinCommand()
        { }

        public ElfinCommand(ElfinCommand CommandData)
        {
            this.Name = CommandData.Name;
            this.Respond = CommandData.Respond;
        }
    }

    public class ElfinClient
    {
        public ElfinCommand[] Commands = {
            new ElfinCommand() {
                Name = "ping",
                Respond = async (DiscordMessage Message) => {
                    await Message.RespondAsync("Pong!");
                }
            }
        };
    }
}

i need to move elfinclient but its going well :D

Florian Voß•2y ago

just Respond = (message) => //code; should be enough

Respond = async (message) => await message.RespondAsync("Pong!");

Respond = async (message) => await message.RespondAsync("Pong!");

thieved•2y ago

omg im getting so good catlaugh

using Elfin.Commands;

namespace Elfin.Core
{
    public class ElfinClient
    {
        public ElfinCommand[] Commands = {
            new ElfinCommand() {
                Name = "ping",
                Respond = async (Message) => {
                    await Message.RespondAsync("Pong!");
                }
            }
        };
    }
}

using Elfin.Commands;

namespace Elfin.Core
{
    public class ElfinClient
    {
        public ElfinCommand[] Commands = {
            new ElfinCommand() {
                Name = "ping",
                Respond = async (Message) => {
                    await Message.RespondAsync("Pong!");
                }
            }
        };
    }
}

thieved•2y ago

thieved•2y ago

Florian Voß•2y ago

thieved•2y ago

C# is so fun

Florian Voß•2y ago

yep

thieved•2y ago

thanks guys ❤️

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how can i add a function/method to a class that can be changed upon construction?