Categories
Bitcoin Cryptocurrency Development

How to send a 100KB OP_RETURN?

I’m trying to send an OP_RETURN transaction, and the program says that I can’t do it because it is over 80 bytes. I would like to send a transaction using OP_RETURN that stores data. There is a site called https://bico.media/, but I can’t use it because I want to use the testnet. Note: I know […]

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Development System & Network

Apt is broken (unmet dependencies)

So basically whenever I try to install or remove anything, it says: You might want to run ‘apt –fix-broken install’ to correct these. The following packages have unmet dependencies: libc-bin : Depends: libc6 (> 2.29) but 2.24-11+deb9u4 is to be installed libc-dev-bin : Depends: libc6 (> 2.29) but 2.24-11+deb9u4 is to be installed libc6-dev : […]

Categories
Artificial Intelligence (AI) Development

Why can neural networks generalize at all?

Neural networks are incredibly good at learning functions. We know by the universal approximation theorem that, theoretically, they can take the form of almost any function – and in practice, they seem particularly apt at learning the right parameters. However, something we often have to combat when training neural networks is overtfitting – reproducing the […]

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Development System & Network

linux – routing between bridge networks without overlay

Here’s the scenario. There are two hosts in a subnet (both are virtualbox VMs) and both are on the same network 192.168.1.0. I’ve additionally created two bridge interfaces with separate network slices. Question: Is there a way ip on host1 bridge to communicate with an ip on host2 bridge? I’m looking if there’s a way […]

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Development System & Network

Change error page for 502 Bad Gateway error Nginx not working

I have researched online for a means to change the error page when running into a 502 Bad Gateway error. I have tried all the methods given to no avail. I looked in the nginx.conf file and saw that it points to /usr/share/nginx/html/50x.html when dealing with 500 errors. However this page is never shown. Instead […]

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Development

Google Apps Script year bug

I just ran into an awkward issue on Google Apps Script. Since yesterday, Dec 30, 2019, the function Utilities.formatDate returns 2020 as the current year. In the screenshot, you can see the log of function ‘yearBug’. The log timestamp clearly indicates Dec 31, 2019, but the output is 2020. for screenshot click here The timezone […]

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Development

Send multiple SKU’s and Quantities to stripe from php

I have built a shopping cart and want to send multiple items to stripe. The page is populated using php and mysql. I want to take each of the listed SKU’s and associated quantities from the table see below; <?php $sql = “SELECT * FROM cart WHERE sess_id = ‘$sess_id'”; $result = mysqli_query($conn, $sql); if […]

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Development

R error message: invalid type (NULL) for variable when running t test [closed]

Hi I am currently trying to perform a t-test for BMI and the Outcome variables in a diabetes dataset I am working on. My goal is to determine whether there is a significant difference between the means of two groups. So far I’ve tried looking for any NULL values within my data set and these […]

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Development

Rails Upgrade makes default Time format change. How to revert?

I am upgrading a Rails app from Rails 4.2 -> 5.2 (a subsequent upgrade to Rails 6 is pending) Ruby 2.2 -> 2.5 Postgres 9.1 -> 10 in various steps. Since the Rails upgrade requires the Postgres upgrade I can’t separate the upgrades in a sensible way. Currently I am struggling with the way “Time” […]

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Development

Consume minimum N number of messages once from Kafka with KafkaListener

I need to consumer minimum N number of messages once from Kafka with KafkaListener Below are the Consumer configurations Map<String, Object> props = new HashMap<>(); props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers); props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class); props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class); props.put(ConsumerConfig.GROUP_ID_CONFIG, “batch”); // maximum records per poll props.put(ConsumerConfig.MAX_POLL_RECORDS_CONFIG, “10”);