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The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Cavern of COBOL > Coding Horrors: You can gather all your technical debt into one easy framework!
«‹›1501 »
 
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Zopotantor
Feb 24, 2013

...und ist er drin dann lassen wir ihn niemals wieder raus...
 This looks like an ideal use case for blockchain. I'll start the wiki.

* # ? Mar 12, 2024 21:05
  • Quote
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# ? Apr 27, 2024 16:45
  • Quote
Bruegels Fuckbooks
Sep 14, 2004

Now, listen - I know the two of you are very different from each other in a lot of ways, but you have to understand that as far as Grandpa's concerned, you're both pieces of shit! Yeah. I can prove it mathematically.

Zopotantor posted:

This looks like an ideal use case for blockchain. I'll start the wiki.
I think we can do this. Note that the code for peer to peer and proof of work aspects of blockchain is omitted as an exercise for the reader.

code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace BlockchainIsEven
{
    public class Transaction
    {
        public string FromAddress { get; set; }
        public string ToAddress { get; set; }
        public int Amount { get; set; }
        public byte[] Signature { get; set; }

        public bool Validate()
        {
            // Perform basic transaction validation
            return !string.IsNullOrEmpty(FromAddress) && !string.IsNullOrEmpty(ToAddress) && Amount > 0;
        }
    }

    public class Block
    {
        public int Index { get; set; }
        public DateTime Timestamp { get; set; }
        public string PreviousHash { get; set; }
        public string Hash { get; set; }
        public Transaction[] Transactions { get; set; }

        public void Mine(int difficulty)
        {
            string hashPrefix = new string('0', difficulty);
            while (!Hash.StartsWith(hashPrefix))
            {
                Hash = CalculateHash();
            }
        }

        private string CalculateHash()
        {
            using (SHA256 sha256 = SHA256.Create())
            {
                string rawData = $"{Index}{Timestamp}{PreviousHash}{SerializeTransactions()}";
                byte[] bytes = Encoding.UTF8.GetBytes(rawData);
                byte[] hash = sha256.ComputeHash(bytes);
                return BitConverter.ToString(hash).Replace("-", "");
            }
        }

        private string SerializeTransactions()
        {
            // Serialize transactions to a string representation
            return string.Join(",", Transactions);
        }

        public string CalculateMerkleRoot()
        {
            var transactionHashes = Transactions.Select(t => CalculateHash(t.ToString())).ToArray();
            return BuildMerkleTree(transactionHashes);
        }

        private string BuildMerkleTree(string[] hashes)
        {
            if (hashes.Length == 1)
                return hashes[0];

            var parentHashes = new List<string>();
            for (int i = 0; i < hashes.Length; i += 2)
            {
                if (i + 1 < hashes.Length)
                {
                    var leftHash = hashes[i];
                    var rightHash = hashes[i + 1];
                    var combinedHash = CalculateHash($"{leftHash}{rightHash}");
                    parentHashes.Add(combinedHash);
                }
                else
                {
                    parentHashes.Add(hashes[i]);
                }
            }

            return BuildMerkleTree(parentHashes.ToArray());
        }

        private string CalculateHash(string data)
        {
            using (SHA256 sha256 = SHA256.Create())
            {
                byte[] bytes = Encoding.UTF8.GetBytes(data);
                byte[] hash = sha256.ComputeHash(bytes);
                return BitConverter.ToString(hash).Replace("-", "");
            }
        }
    }

    public class Blockchain
    {
        private readonly List<Block> _chain = new List<Block>();
        private readonly List<Transaction> _pendingTransactions = new List<Transaction>();
        public const int DIFFICULTY = 4;
        public const int BLOCK_REWARD = 10;
        public const int TRANSACTION_FEE = 1;

        public void AddTransaction(Transaction transaction)
        {
            if (transaction.Validate())
                _pendingTransactions.Add(transaction);
        }

        public async Task MineBlock(string minerAddress)
        {
            var block = new Block
            {
                Index = _chain.Count + 1,
                Timestamp = DateTime.Now,
                PreviousHash = _chain.LastOrDefault()?.Hash ?? string.Empty,
                Transactions = _pendingTransactions.ToArray()
            };

            block.Mine(DIFFICULTY);
            _chain.Add(block);
            _pendingTransactions.Clear();

            var coinbaseTransaction = new Transaction
            {
                FromAddress = string.Empty,
                ToAddress = minerAddress,
                Amount = BLOCK_REWARD
            };
            _pendingTransactions.Add(coinbaseTransaction);

            await BroadcastBlock(block);
        }

        private async Task BroadcastBlock(Block block)
        {
            var apiClient = new BlockchainAPIClient();
            await apiClient.BroadcastBlockAsync(block);
        }

        public async Task<bool> IsValidChain()
        {
            for (int i = 1; i < _chain.Count; i++)
            {
                var currentBlock = _chain[i];
                var previousBlock = _chain[i - 1];

                if (currentBlock.Hash != currentBlock.CalculateHash())
                    return false;

                if (currentBlock.PreviousHash != previousBlock.Hash)
                    return false;

                var apiClient = new BlockchainAPIClient();
                if (!await apiClient.VerifyProofOfWorkAsync(currentBlock, DIFFICULTY))
                    return false;
            }

            return true;
        }

        public async Task ResolveConflicts()
        {
            var apiClient = new BlockchainAPIClient();
            var peers = await apiClient.GetPeersAsync();
            var newChain = _chain;

            foreach (var peer in peers)
            {
                var response = await apiClient.GetChainFromPeerAsync(peer);
                var chain = response.Chain;

                if (chain.Count > newChain.Count && await IsValidChain(chain))
                    newChain = chain;
            }

            if (newChain != _chain)
                _chain = newChain;
        }
    }

    public interface IIsEvenStrategy
    {
        Task<bool> IsEvenAsync(int number);
    }

    public class TraditionalIsEvenStrategy : IIsEvenStrategy
    {
        public Task<bool> IsEvenAsync(int number)
        {
            return Task.FromResult(number % 2 == 0);
        }
    }

    public class BlockchainIsEvenStrategy : IIsEvenStrategy
    {
        private readonly Blockchain _blockchain = new Blockchain();

        public async Task<bool> IsEvenAsync(int number)
        {
            var transaction = CreateTransaction(number);
            _blockchain.AddTransaction(transaction);

            await _blockchain.MineBlock("miner1");
            await _blockchain.ResolveConflicts();

            return transaction.Amount % 2 == 0;
        }

        private Transaction CreateTransaction(int number)
        {
            var transaction = new Transaction
            {
                FromAddress = "sender",
                ToAddress = "receiver",
                Amount = number - Blockchain.TRANSACTION_FEE
            };

            // Sign the transaction with a dummy private key
            using (ECDsa ecdsa = ECDsa.Create())
            {
                byte[] transactionBytes = Encoding.UTF8.GetBytes(transaction.ToString());
                transaction.Signature = ecdsa.SignData(transactionBytes, HashAlgorithmName.SHA256);
            }

            return transaction;
        }
    }

    public class IsEvenChecker
    {
        private IIsEvenStrategy _strategy;

        public IsEvenChecker(IIsEvenStrategy strategy)
        {
            _strategy = strategy;
        }

        public async Task<bool> IsEvenAsync(int number)
        {
            return await _strategy.IsEvenAsync(number);
        }
    }

    public class Program
    {
        public static async Task Main(string[] args)
        {
            int number = 42;

            IIsEvenStrategy traditionalStrategy = new TraditionalIsEvenStrategy();
            IsEvenChecker traditionalChecker = new IsEvenChecker(traditionalStrategy);
            bool isEvenTraditional = await traditionalChecker.IsEvenAsync(number);
            Console.WriteLine($"Traditional IsEven: {isEvenTraditional}");

            IIsEvenStrategy blockchainStrategy = new BlockchainIsEvenStrategy();
            IsEvenChecker blockchainChecker = new IsEvenChecker(blockchainStrategy);
            Console.WriteLine("Checking if the number is even using blockchain...");
            bool isEvenBlockchain = await blockchainChecker.IsEvenAsync(number);
            Console.WriteLine($"Blockchain IsEven: {isEvenBlockchain}");
        }
    }
}

* # ? Mar 13, 2024 01:41
  • Quote
Hammerite
Mar 9, 2007

And you don't remember what I said here, either, but it was pompous and stupid.
Jade Ear Joe
you got chatgpt or something to write all that right? If you sat down and wrote that yourself for the sake of making a joke in the computer programming thread then either you're crazy or i am.

* # ? Mar 13, 2024 02:07
  • Quote
ShoulderDaemon
Oct 9, 2003
support goon fund
Taco Defender

ultrafilter posted:

I briefly looked into generating a lookup table using templates but that's way too much effort for me.

code:
#include <array>
#include <cstdint>
#include <iostream>
#include <utility>

template<size_t i>
struct IsEven {
    constexpr static bool isEven() {
        return !IsEven<i-1>::isEven();
    }
};

template<>
struct IsEven<0> {
    constexpr static bool isEven() {
        return true;
    }
};

static const size_t MAX = 65536;

template<size_t... Is>
constexpr auto precomputeIsEven(std::index_sequence<Is...>) {
    return std::array<bool, MAX>{ IsEven<Is>::isEven()... };
}

constexpr auto isEven = precomputeIsEven(std::make_index_sequence<MAX>());

int main(int argc, const char *argv[]) {
    for (unsigned int i = 0; i < MAX; ++i)
        std::cout << i << " is " << (isEven[i] ? "even" : "odd") << ".\n";
    return 0;
}
I have been paid actual money for writing code that does this trick for a "real" problem.

* # ? Mar 13, 2024 02:11
  • Quote
Bruegels Fuckbooks
Sep 14, 2004

Now, listen - I know the two of you are very different from each other in a lot of ways, but you have to understand that as far as Grandpa's concerned, you're both pieces of shit! Yeah. I can prove it mathematically.

Hammerite posted:

you got chatgpt or something to write all that right? If you sat down and wrote that yourself for the sake of making a joke in the computer programming thread then either you're crazy or i am.

I've been testing the new claude model and it's good at programming humor. It doesn't like violence in source code comments so you still need to use chatgpt for any code that involves violence but it's generally more flexible otherwise.

* # ? Mar 13, 2024 03:19
  • Quote
Volmarias
Dec 31, 2002

EMAIL... THE INTERNET... SEARCH ENGINES...

Bruegels Fuckbooks posted:

I think we can do this. Note that the code for peer to peer and proof of work aspects of blockchain is omitted as an exercise for the reader.

code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace BlockchainIsEven
{
    public class Transaction
    {
        public string FromAddress { get; set; }
        public string ToAddress { get; set; }
        public int Amount { get; set; }
        public byte[] Signature { get; set; }

        public bool Validate()
        {
            // Perform basic transaction validation
            return !string.IsNullOrEmpty(FromAddress) && !string.IsNullOrEmpty(ToAddress) && Amount > 0;
        }
    }

    public class Block
    {
        public int Index { get; set; }
        public DateTime Timestamp { get; set; }
        public string PreviousHash { get; set; }
        public string Hash { get; set; }
        public Transaction[] Transactions { get; set; }

        public void Mine(int difficulty)
        {
            string hashPrefix = new string('0', difficulty);
            while (!Hash.StartsWith(hashPrefix))
            {
                Hash = CalculateHash();
            }
        }

        private string CalculateHash()
        {
            using (SHA256 sha256 = SHA256.Create())
            {
                string rawData = $"{Index}{Timestamp}{PreviousHash}{SerializeTransactions()}";
                byte[] bytes = Encoding.UTF8.GetBytes(rawData);
                byte[] hash = sha256.ComputeHash(bytes);
                return BitConverter.ToString(hash).Replace("-", "");
            }
        }

        private string SerializeTransactions()
        {
            // Serialize transactions to a string representation
            return string.Join(",", Transactions);
        }

        public string CalculateMerkleRoot()
        {
            var transactionHashes = Transactions.Select(t => CalculateHash(t.ToString())).ToArray();
            return BuildMerkleTree(transactionHashes);
        }

        private string BuildMerkleTree(string[] hashes)
        {
            if (hashes.Length == 1)
                return hashes[0];

            var parentHashes = new List<string>();
            for (int i = 0; i < hashes.Length; i += 2)
            {
                if (i + 1 < hashes.Length)
                {
                    var leftHash = hashes[i];
                    var rightHash = hashes[i + 1];
                    var combinedHash = CalculateHash($"{leftHash}{rightHash}");
                    parentHashes.Add(combinedHash);
                }
                else
                {
                    parentHashes.Add(hashes[i]);
                }
            }

            return BuildMerkleTree(parentHashes.ToArray());
        }

        private string CalculateHash(string data)
        {
            using (SHA256 sha256 = SHA256.Create())
            {
                byte[] bytes = Encoding.UTF8.GetBytes(data);
                byte[] hash = sha256.ComputeHash(bytes);
                return BitConverter.ToString(hash).Replace("-", "");
            }
        }
    }

    public class Blockchain
    {
        private readonly List<Block> _chain = new List<Block>();
        private readonly List<Transaction> _pendingTransactions = new List<Transaction>();
        public const int DIFFICULTY = 4;
        public const int BLOCK_REWARD = 10;
        public const int TRANSACTION_FEE = 1;

        public void AddTransaction(Transaction transaction)
        {
            if (transaction.Validate())
                _pendingTransactions.Add(transaction);
        }

        public async Task MineBlock(string minerAddress)
        {
            var block = new Block
            {
                Index = _chain.Count + 1,
                Timestamp = DateTime.Now,
                PreviousHash = _chain.LastOrDefault()?.Hash ?? string.Empty,
                Transactions = _pendingTransactions.ToArray()
            };

            block.Mine(DIFFICULTY);
            _chain.Add(block);
            _pendingTransactions.Clear();

            var coinbaseTransaction = new Transaction
            {
                FromAddress = string.Empty,
                ToAddress = minerAddress,
                Amount = BLOCK_REWARD
            };
            _pendingTransactions.Add(coinbaseTransaction);

            await BroadcastBlock(block);
        }

        private async Task BroadcastBlock(Block block)
        {
            var apiClient = new BlockchainAPIClient();
            await apiClient.BroadcastBlockAsync(block);
        }

        public async Task<bool> IsValidChain()
        {
            for (int i = 1; i < _chain.Count; i++)
            {
                var currentBlock = _chain[i];
                var previousBlock = _chain[i - 1];

                if (currentBlock.Hash != currentBlock.CalculateHash())
                    return false;

                if (currentBlock.PreviousHash != previousBlock.Hash)
                    return false;

                var apiClient = new BlockchainAPIClient();
                if (!await apiClient.VerifyProofOfWorkAsync(currentBlock, DIFFICULTY))
                    return false;
            }

            return true;
        }

        public async Task ResolveConflicts()
        {
            var apiClient = new BlockchainAPIClient();
            var peers = await apiClient.GetPeersAsync();
            var newChain = _chain;

            foreach (var peer in peers)
            {
                var response = await apiClient.GetChainFromPeerAsync(peer);
                var chain = response.Chain;

                if (chain.Count > newChain.Count && await IsValidChain(chain))
                    newChain = chain;
            }

            if (newChain != _chain)
                _chain = newChain;
        }
    }

    public interface IIsEvenStrategy
    {
        Task<bool> IsEvenAsync(int number);
    }

    public class TraditionalIsEvenStrategy : IIsEvenStrategy
    {
        public Task<bool> IsEvenAsync(int number)
        {
            return Task.FromResult(number % 2 == 0);
        }
    }

    public class BlockchainIsEvenStrategy : IIsEvenStrategy
    {
        private readonly Blockchain _blockchain = new Blockchain();

        public async Task<bool> IsEvenAsync(int number)
        {
            var transaction = CreateTransaction(number);
            _blockchain.AddTransaction(transaction);

            await _blockchain.MineBlock("miner1");
            await _blockchain.ResolveConflicts();

            return transaction.Amount % 2 == 0;
        }

        private Transaction CreateTransaction(int number)
        {
            var transaction = new Transaction
            {
                FromAddress = "sender",
                ToAddress = "receiver",
                Amount = number - Blockchain.TRANSACTION_FEE
            };

            // Sign the transaction with a dummy private key
            using (ECDsa ecdsa = ECDsa.Create())
            {
                byte[] transactionBytes = Encoding.UTF8.GetBytes(transaction.ToString());
                transaction.Signature = ecdsa.SignData(transactionBytes, HashAlgorithmName.SHA256);
            }

            return transaction;
        }
    }

    public class IsEvenChecker
    {
        private IIsEvenStrategy _strategy;

        public IsEvenChecker(IIsEvenStrategy strategy)
        {
            _strategy = strategy;
        }

        public async Task<bool> IsEvenAsync(int number)
        {
            return await _strategy.IsEvenAsync(number);
        }
    }

    public class Program
    {
        public static async Task Main(string[] args)
        {
            int number = 42;

            IIsEvenStrategy traditionalStrategy = new TraditionalIsEvenStrategy();
            IsEvenChecker traditionalChecker = new IsEvenChecker(traditionalStrategy);
            bool isEvenTraditional = await traditionalChecker.IsEvenAsync(number);
            Console.WriteLine($"Traditional IsEven: {isEvenTraditional}");

            IIsEvenStrategy blockchainStrategy = new BlockchainIsEvenStrategy();
            IsEvenChecker blockchainChecker = new IsEvenChecker(blockchainStrategy);
            Console.WriteLine("Checking if the number is even using blockchain...");
            bool isEvenBlockchain = await blockchainChecker.IsEvenAsync(number);
            Console.WriteLine($"Blockchain IsEven: {isEvenBlockchain}");
        }
    }
}

:boom: Finally! Something flexible! Thank you!

* # ? Mar 13, 2024 03:30
  • Quote
Volguus
Mar 3, 2009

Bruegels Fuckbooks posted:

I think we can do this. Note that the code for peer to peer and proof of work aspects of blockchain is omitted as an exercise for the reader.
.... jfc ....

So this is the new "Enterprise Java Beans" code that kids nowadays write?

* # ? Mar 13, 2024 03:33
  • Quote
Maxxim
Mar 10, 2007

You're overcome by an indescribably odd sensation...!
Using AI to write code is backwards since the AI is constantly evolving. The code will always be better tomorrow - you should stay up to date instead.

code:
from openai import OpenAI

def is_even(value):    
    client = OpenAI()
    completion = client.chat.completions.create(
      model="gpt-3.5-turbo",
      # optimization hack - ask it to return the values True or False so we can skip the cast
      messages=[
        {"role": "system", "content": "i need to know if a number is even. reply with only a single word with the same capitalization: True or False. reply True if the number is even, False otherwise."},
        {"role": "user", "content": "is the following number even? " + str(value)}
      ]
    )

    return completion.choices[0].message.content

if __name__ == '__main__':
    print(is_even(5))
    print(is_even(-4412)) # test a negative number
    print(is_even(100001)) # test a really big number
    print(is_even(0))
code:
> python is_even.py
False
True
False
True

* # ? Mar 13, 2024 05:33
  • Quote
Polio Vax Scene
Apr 5, 2009



 Now get the AI to determine if the number is even using one of the examples in the last couple pages

Bonus points: get the AI to prompt itself

* # ? Mar 13, 2024 05:57
  • Quote
CPColin
Sep 9, 2003

Big ol' smile.
"Skynet began learning at an arithmetic rate..."

* # ? Mar 13, 2024 06:30
  • Quote
ultrafilter
Aug 23, 2007

It's okay if you have any questions.


 I could write a lot about R here but this latest example I came across is a complete mystery:

code:
f <- function() { for (i in 1:1) { i } }
f() # returns NULL

g <- function() { i <- 1; if (i == 1) { i } }
g() # returns 1


The convention for function calls in R is that they return the value of the last expression evaluated. That sure looks like it should be 1 in both cases but that's not what happens. I'm probably happier not thinking too much about why.

* # ? Mar 14, 2024 04:29
  • Quote
Jabor
Jul 16, 2010

#1 Loser at SpaceChem

ultrafilter posted:

I could write a lot about R here but this latest example I came across is a complete mystery:

code:
f <- function() { for (i in 1:1) { i } }
f() # returns NULL

g <- function() { i <- 1; if (i == 1) { i } }
g() # returns 1


The convention for function calls in R is that they return the value of the last expression evaluated. That sure looks like it should be 1 in both cases but that's not what happens. I'm probably happier not thinking too much about why.

The last expression evaluated in g is the if statement. It returns the value of i because the if statement is defined to return the result of whatever branch is chosen (or null, if no branch is chosen).

The last expression evaluated in f is the for loop. This returns null because there's nothing in the specification that says otherwise. (Would it make sense for it to return the value from the last iteration of the loop? Perhaps, but that's not what it does.)

* # ? Mar 14, 2024 04:59
  • Quote
Carbon dioxide
Oct 9, 2012

 .

Only registered members can see post attachments!

* # ? Mar 24, 2024 08:14
  • Quote
Jen heir rick
Aug 4, 2004
when a woman says something's not funny, you better not laugh your ass off

Carbon dioxide posted:

.



The hero we need.

* # ? Mar 24, 2024 10:24
  • Quote
Volguus
Mar 3, 2009
 If the alternative was python or electron on the desktop, gently caress yeah, Java is a million times more preferable to those abominations. If it was to be in a browser anyway, suggesting Java (as an applet? Web start?) that's is indeed a capital sin.

* # ? Mar 24, 2024 15:52
  • Quote
abraham linksys
Sep 6, 2010

:darksouls:
how soon we forget the incredible technology that was Google Web Toolkit

* # ? Mar 24, 2024 16:05
  • Quote
Volguus
Mar 3, 2009

abraham linksys posted:

how soon we forget the incredible technology that was Google Web Toolkit

The millisecond we are done with it, and that's a millisecond too late.

* # ? Mar 24, 2024 16:11
  • Quote
Remulak
Jun 8, 2001
I can't count to four.
Yams Fan

abraham linksys posted:

how soon we forget the incredible technology that was Google Web Toolkit
I’m stuck with this poo poo forever. Goddamn it sucks.

* # ? Mar 24, 2024 16:19
  • Quote
Jen heir rick
Aug 4, 2004
when a woman says something's not funny, you better not laugh your ass off

Volguus posted:

If the alternative was python or electron on the desktop, gently caress yeah, Java is a million times more preferable to those abominations. If it was to be in a browser anyway, suggesting Java (as an applet? Web start?) that's is indeed a capital sin.

I don't think electron's so bad. Visual studio code is written in electron and it works pretty good.

* # ? Mar 24, 2024 17:04
  • Quote
QuarkJets
Sep 8, 2008

Volguus posted:

If the alternative was python or electron on the desktop, gently caress yeah, Java is a million times more preferable to those abominations. If it was to be in a browser anyway, suggesting Java (as an applet? Web start?) that's is indeed a capital sin.

Native Python sure, TKinter sucks, but Python also has extremely good support for Qt and Qt is still a gold standard in desktop gui design, so that'd be a reasonably good choice.

I can't think of a good reason to use Java for any kind of frontend at all

* # ? Mar 24, 2024 22:37
  • Quote
Volguus
Mar 3, 2009
 Yeah, we are in the horror thread for a reason...

* # ? Mar 24, 2024 23:00
  • Quote
Soricidus
Oct 21, 2010
freedom-hating statist shill

QuarkJets posted:

Native Python sure, TKinter sucks, but Python also has extremely good support for Qt and Qt is still a gold standard in desktop gui design, so that'd be a reasonably good choice.

I can't think of a good reason to use Java for any kind of frontend at all

Put it this way … if you’re writing python today, most likely you’re writing it either in vscode (electron) or pycharm (java).

I think the desktop apps I use regularly (ignoring the browser itself and stuff built into the os) are a pretty even split between electron, java, and native qt. I don’t think any of them are written in python.

* # ? Mar 25, 2024 11:14
  • Quote
NtotheTC
Dec 31, 2007

Soricidus posted:

Put it this way … if you’re writing python today, most likely you’re writing it either in vscode (electron) or pycharm (java).

I think the desktop apps I use regularly (ignoring the browser itself and stuff built into the os) are a pretty even split between electron, java, and native qt. I don’t think any of them are written in python.

pycharm is written in java because jetbrains was written in java, if all you're doing is interfacing with qt then why does it matter what language it's written in?

NtotheTC fucked around with this message at 12:19 on Mar 25, 2024

* # ? Mar 25, 2024 12:00
  • Quote
ultrafilter
Aug 23, 2007

It's okay if you have any questions.


 https://twitter.com/ryxcommar/status/1772105348872011972

* # ? Mar 25, 2024 15:31
  • Quote
QuarkJets
Sep 8, 2008

Soricidus posted:

Put it this way … if you’re writing python today, most likely you’re writing it either in vscode (electron) or pycharm (java).

I think the desktop apps I use regularly (ignoring the browser itself and stuff built into the os) are a pretty even split between electron, java, and native qt. I don’t think any of them are written in python.

Regardless of how 2 IDE applications happened to be written, Qt is even easier to use in Python than in C++

* # ? Mar 25, 2024 16:01
  • Quote
NtotheTC
Dec 31, 2007

ultrafilter posted:

https://twitter.com/ryxcommar/status/1772105348872011972

this is why python2 was superior

Python code:
>>> True=99999    # Large number that we wont ever use
>>> print({1: "foo", True: "bar"})

* # ? Mar 25, 2024 16:10
  • Quote
Dijkstracula
Mar 18, 2003

You can't spell 'vector field' without me, Professor!

NtotheTC posted:

this is why python2 was superior

ahh, a true classic

Python code:
$ python2
Python 2.7.15 (default, Jun 27 2018, 13:05:28)
[GCC 8.1.1 20180531] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> (False, True) = (True, False)
>>> (1 == 2) == False
False
>>>

* # ? Mar 25, 2024 16:13
  • Quote
OddObserver
Apr 3, 2009
 I hate to defend Python, but at some point the code gets what it deserves.

* # ? Mar 25, 2024 17:11
  • Quote
Breetai
Nov 6, 2005

🥄Mah spoon is too big!🍌
Had to look at some poorly running code.

Turns out the issue was a library, call it lnd.lib.input_vw for argument's sake. Every time it's used in a join spool space usage goes up like crazy.

Did some investigations in dbc.tablesv.

lnd.lib.input_vw is pretty much:

code:
select *
from lnd.db.input_tb

union all

select *
from hist.db.input_tb
where hist.db.input_tb is basically identical to lnd.db.input_tb, with only two differences:
1. hist.db.input_tb contains all entries for 2016 and before (e.g. it's a historical data store) and lnd.db.input_tb contains everything from 2017 onwards. File sizes are 2TB and 1TB respectively.
2. While it has the same primary index (on a unique alphanumerical key) as lnd.db.input_tb, hist.db.input_tb has never had statistics run on its primary index.

Even a

code:
select top 10 * from lnd.lib.input_vw
query will use up 5 loving Terabytes of spool space.


"Why do our programs run so slow?"

* # ? Apr 2, 2024 01:57
  • Quote
Hammerite
Mar 9, 2007

And you don't remember what I said here, either, but it was pompous and stupid.
Jade Ear Joe

Breetai posted:

(e.g. it's a historical data store)

you mean i.e. not e.g.

* # ? Apr 2, 2024 20:11
  • Quote
Jen heir rick
Aug 4, 2004
when a woman says something's not funny, you better not laugh your ass off

Breetai posted:

Had to look at some poorly running code.

Turns out the issue was a library, call it lnd.lib.input_vw for argument's sake. Every time it's used in a join spool space usage goes up like crazy.

Did some investigations in dbc.tablesv.

lnd.lib.input_vw is pretty much:

code:
select *
from lnd.db.input_tb

union all

select *
from hist.db.input_tb
where hist.db.input_tb is basically identical to lnd.db.input_tb, with only two differences:
1. hist.db.input_tb contains all entries for 2016 and before (e.g. it's a historical data store) and lnd.db.input_tb contains everything from 2017 onwards. File sizes are 2TB and 1TB respectively.
2. While it has the same primary index (on a unique alphanumerical key) as lnd.db.input_tb, hist.db.input_tb has never had statistics run on its primary index.

Even a

code:
select top 10 * from lnd.lib.input_vw
query will use up 5 loving Terabytes of spool space.


"Why do our programs run so slow?"

This is really a database horror than a coding horror isn't it? Not that it matters, poo poo still sucks.

* # ? Apr 2, 2024 20:49
  • Quote
csammis
Aug 26, 2003

Mental Institution

Jen heir rick posted:

This is really a database horror than a coding horror isn't it? Not that it matters, poo poo still sucks.

What is a database but coding horrors made manifest

* # ? Apr 3, 2024 14:08
  • Quote
ultrafilter
Aug 23, 2007

It's okay if you have any questions.

csammis posted:

What is a database but coding horrors made persistent
* # ? Apr 3, 2024 14:31
  • Quote
leper khan
Dec 28, 2010
Honest to god thinks Half Life 2 is a bad game. But at least he likes Monster Hunter.

csammis posted:

What is a database but coding horrors made transactional
* # ? Apr 3, 2024 14:40
  • Quote
OddObserver
Apr 3, 2009

csammis posted:

What is a database but coding horrors made atomic, consistent, isolated, and durable?
* # ? Apr 3, 2024 15:09
  • Quote
ynohtna
Feb 16, 2007

backwoods compatible
Illegal Hen
Data? You look at that stinking pile of misrepresentative errors and you see data? You're even crazier than I thought.

* # ? Apr 3, 2024 15:15
  • Quote
QuarkJets
Sep 8, 2008

 Rooting around in a dumpster like a filthy DBA

* # ? Apr 3, 2024 17:12
  • Quote
darthbob88
Oct 13, 2011

YOSPOS
Javascript horror that just crossed my desk
https://twitter.com/eloffd/status/1770223037096329349

When making the regex, {} gets expanded to a string, "[Object object]". As a regex, a character set in [square brackets] means "find any character in this set in the given string". "mom" matches the "o" in "object", but "dad" doesn't match anything.

* # ? Apr 3, 2024 22:01
  • Quote
Jen heir rick
Aug 4, 2004
when a woman says something's not funny, you better not laugh your ass off

darthbob88 posted:

Javascript horror that just crossed my desk
https://twitter.com/eloffd/status/1770223037096329349

When making the regex, {} gets expanded to a string, "[Object object]". As a regex, a character set in [square brackets] means "find any character in this set in the given string". "mom" matches the "o" in "object", but "dad" doesn't match anything.

Yeah, but just don't do that. It's fine.

* # ? Apr 4, 2024 01:19
  • Quote
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# ? Apr 27, 2024 16:45
  • Quote
dc3k
Feb 18, 2003

what.
everything in linux is a file
everything in javascript is a god drat nightmare

* # ? Apr 4, 2024 02:32
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The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Cavern of COBOL > Coding Horrors: You can gather all your technical debt into one easy framework!
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