How to leave or completely mute a channel in Discord for desktop?

I’m in several Discord channels, some potentially useful but full of irrelevant “@here” messages, and would like to get rid of their notifications in my task bar. I’ve already muted them and set their notification setting to “Nothing”, yet still get the red message count icon on my task bar button even with the latest version of Discord. How to completely stop channel notifications, even by leaving the channel? Editing the channels is forbidden according to my mouse cursor.

python – How can I manage that a command is only executable in a certain channel?

I am creating a ticket system right now. In the process, I have also defined various sub-commands for this.
So these should also only be executable when the user is in his own channel. However, the user can still enter !trivia subcommand and it will do just that. Is there a check to stop this and the user can also only execute the command in his own channel, but nowhere else?
I work with a database, would I then have to determine the text channel from this and check whether this command was also executed there?

I have already introduced for a !trivia close command, but I can’t use that here, because then the table would be dropped as well, that’s not supposed to happen, because after the certain command !trivia start an event is triggered.

My code for the close command:

        try:
            guild = self.bot.get_guild(id=ctx.guild.id)
            ticketChannel = guild.get_channel(int(ctx.channel.id))
            fetchOne('closed', ctx.channel.id)
            e.description = f'{ticketChannel.mention} is closed!'
            await ctx.send(embed=e)
            await ticketChannel.delete(reason=f'{ctx.author.name} close the ticked!')

            main = sqlite3.connect('src/ticket.db')
            cur = main.cursor()
            cur.execute(f'DROP TABLE `{ctx.channel.id}`')
            cur.close()
            main.commit()
            main.close()
        except Exception as err:
            print(err)
            e.title = 'Ticket not found! Please use this command in a ticket channel!'
            await ctx.send(embed=e, delete_after=3)

How I create a ticket in general:

    async def trivia_ticket(self, guild, author, channel, info):
        cursor = conn.cursor()
        try:
            data = fetchOne('category', guild.id)
        except sqlite3.OperationalError:
            cursor.execute(f"CREATE TABLE IF NOT EXISTS `{guild.id}`('category' INT, 'channel_id' INT)")
            cursor.execute(f'INSERT INTO `{guild.id}`(category) VALUES ("{None}")')
            conn.commit()
            data = fetchOne('category', guild.id)
        e = discord.Embed(color=self.bot.color)
        overwrites = {
            guild.default_role: discord.PermissionOverwrite(read_messages=False),
            author: discord.PermissionOverwrite(read_messages=True),
            guild.me: discord.PermissionOverwrite(read_messages=True)
        }
        if data(0) == "None":
            trivia_channel = await guild.create_text_channel(name=f'{author.name}-ticket', overwrites=overwrites,
                                                             topic=f'Owner: {author.id}, Info: Please follow the rules')
            ec = discord.Embed(color=self.bot.color)
            ec.title = "Welcome to your own channel!"
            ec.description = "To start just type `!trivia start` into the channel."
            ec.add_field(name="How long do I have to answer the question?", value="30 seconds to set a reaction")
            ec.add_field(name="How can I stop the quiz?",
                         value="After every question you can take a break, you will be "
                               "asked. `!stop` will delete the channel and you have to "
                               "wait for the next quiz", inline=False)
            await trivia_channel.send(embed=ec)
        else:
            category = guild.get_channel(int(data(0)))
            trivia_channel = await guild.create_text_channel(name=f'{author.name}-ticket', overwrites=overwrites,
                                                             topic=f'Owner: {author.id}, Info: Please follow the rules!',
                                                             category=category)
            ec = discord.Embed(color=self.bot.color)
            ec.title = "Welcome to your own channel!"
            ec.description = "To start just type `!trivia start` into the channel."
            ec.add_field(name="How long do I have to answer the question?", value="30 seconds to set a reaction")
            ec.add_field(name="How can I stop the quiz?",
                         value="After every question you can take a break, you will be "
                               "asked. `!stop` will delete the channel and you have to "
                               "wait for the next quiz", inline=False)
            await trivia_channel.send(embed=ec)
        e.title = f"Success! Your trivia ticket has been created here:"
        e.description = f'{trivia_channel.mention}'
        if channel is not None:
            await channel.send(embed=e, delete_after=3)
        cursor.execute(f'CREATE TABLE IF NOT EXISTS `{trivia_channel.id}`("author_name" TEXT, "author_id" INT, '
                       f'"info" TEXT, "channel_name" TEXT, "closed" BOOL)')
        cursor.execute(f'INSERT INTO `{trivia_channel.id}`(author_name, author_id, info, channel_name, closed) VALUES(?, ?, ?, ?, "{False}")', (author.name, author.id, str(info), str(trivia_channel)))
        cursor.close()
        conn.commit()

The Ticket not foundoutput should be seen if the user tries to run the command in any other channel but not his own one.

My command (!trivia start) which should only be executed in the own channel and in no other channel including the group:

    @commands.group(invoke_without_command=True, name='trivia', case_insensitive=False)
    @commands.guild_only()
    @commands.cooldown(1, 10, BucketType.user)
    async def trivia_channel(self, ctx, Information: str="Please follow the rules."):
        """Creates a trivia channel for the user."""
        try:
            await self.trivia_ticket(ctx.guild, ctx.author, ctx.channel, Information)
        except Exception as e:
            print(f'ERROR: {e}')
            return

    @trivia_channel.command(aliases=("testing"))
    @commands.guild_only()
    async def start(self, ctx):
        """Starts the trivia quiz."""

I already have a workaround to prevent people from spamming !trivia start which would be a @commands.cooldown(1, 10, BucketType.user) thing, right?
I also tried out to just make the command accessable with a role but that is not a wanted workaround.

information theory – Compressing the output of a discrete memoryless channel

Let $xin mathcal{X}$ be a symbol from an input alphabet, let $p(y|x)$ be a conditional probability distribution corresponding to a discrete memoryless channel and let $yinmathcal{Y}$ be an output alphabet. Given that the channel has capacity $C$, is it true that one can compress any $n-$bit output to $nC$ bits with error in the compression vanishing as $nrightarrowinfty$?

The motivation for this comes from the reverse Shannon theorem established in Section IV of https://arxiv.org/pdf/quant-ph/0106052.pdf. To simulate a channel, Alice applies the channel locally and then transfers the output to Bob. She does this in a clever way such that only $2^{nC}$ bits of communication is actually required.

I was wondering if her protocol is equivalent to compressing the channel output and sending it over to Bob.

how to browse very old videos in a youtube channel

I would like to browse older videos on the msnbc youtube channel. There is an infinite scroll feature on the videos page but eventually the page becomes too big and slow, with all the graphics etc. For example, by my estimate, there are about 13k videos uploaded to scroll to get back a bit over 1 year. How would I browse older videos eg 5 years ago? The infinite scroll isn’t feasible. I could do a youtube-wide search for something like “msnbc” but that would pick up a bunch of videos not from the channel. I could do a channel-wide search but that will screen some of the videos. Are old yt videos actually inaccessible unless you know what to search for?

pathfinder 2e – How does Channel Smite work?

At level 4, Berric the cleric takes Channel Smite. He then attacks someone, expending a Harm spell. From the text:

Make a melee Strike and add the spell’s damage to the Strike’s damage.

Does this mean that the basic Fortitude save mentioned in the text for Harm simply isn’t used? If Berric used a first level spell slot, which of the two possibilities below is the case when he strikes and hits?

  1. He strikes, dealing his normal weapon damage and then simply adding another 1d8.
  2. He strikes, dealing his normal weapon damage. The enemy takes 1d8 damage, but rolls a basic Fortitude save: it takes none of that 1d8 damage on a critical success, half damage on a success, full damage on a failure and double damage on a critical failure.

I think it’s the first, because the text for Channel Smite doesn’t mention any saving throw, but I’d just like to confirm…

nginx – There is no organization established in GCP. Which channel can I use to reflect the status of GCP virtual machines?

There is no organization established in GCP. Which channel can I use to reflect the GCP virtual machine problem?

In the web server, I configure through nginx, but the timeout appears from time to time on the browser, and the timeout appears. The ping is normal but all ports on this IP seem to be inaccessible.

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go – Golang unbuffered channel – Correct Usage

I’ve majorly written the review comments inline with the code. I could’ve made the code simple as @thwd suggested; but as you’re learning and this is not an actual use case, I’m not changing the logic.

Also, to know about buffered channels better, do read this.

package main

import (
    "fmt"
    "sync"
)

// As goroutine could schedule in any order, it's better if the
// operation is stored as well, with the result.
type result struct {
    op string
    v  int
}

// It's better to use unidirectional channels if bi-directional
// is not needed. It can also distinguish how a channel should be used
// in different function/ methods (eg. producer, consumer)
type fn func(int, int, chan<- result, *sync.WaitGroup)

func add(x, y int, r chan<- result, wg *sync.WaitGroup) {
    fmt.Println("op: add")
    r <- result{"add", x + y}
    wg.Done()
}

func sub(x, y int, r chan<- result, wg *sync.WaitGroup) {
    fmt.Println("op: sub")
    r <- result{"sub", x - y}
    wg.Done()
}

func prod(x, y int, r chan<- result, wg *sync.WaitGroup) {
    fmt.Println("op: prod")
    r <- result{"prod", x * y}
    wg.Done()
}

func main() {
    // In case of multiple declaration, you can group
    // But it's totally dependent on the developer writing it.
    // But the ultimate goal is write clean code.
    var (
        fops = ()fn{add, sub, prod}
        ch   = make(chan result, len(fops))
        wg   sync.WaitGroup
        x, y = 10, 20
    )

    wg.Add(len(fops))
    for _, f := range fops {
        go f(x, y, ch, &wg)
    }

    wg.Wait()
    close(ch)

    // Either use range, or you run a loop from (0, len(fops));
    // that would work as well!
    for v := range ch {
        fmt.Println(v)
    }
}

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