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Mastering Development

Regex – Prioritize grouped match

I’m looking at code for a Twitch bot someone wrote, and they have this regex: ([_-])?(left|right|a|start|\.){1}(\d*)(\%?)(\d*)(ms|s)?(\+?) This bot parses text to press inputs on a Twitch Plays stream. Whitespace is trimmed before parsing, An example of a full input is _a800ms. The second group is generated based on the available inputs for the console, so […]

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Mastering Development

Problems with shape files

I want to make a map with the coronavirus infected people by state in US . So the idea is to visualize a map with all states of US and see a range of infected people( i.e 500-2000 , etc) in all the map. This should be represented by different shades of one color. The […]

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Development

JSON Schema Validator Selecting Validators

My problem is how do I get the json-schema-validator library to actually validate a JSON response against the JSON Schema I have defined. Files, code and background information follow. Schema Swagger 2.0 standard definition Schema Students API Defintion { “swagger”: “2.0”, “info”: { “title”: “Students API”, “description”: “Operations on Students”, “version”: “1.0” }, “basePath”: “/v1/students”, […]

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Artificial Intelligence (AI) Development

Whats Wrong With this Code?

“”” Visualize Genetic Algorithm to find a minimul point in a function. “”” import numpy as np import matplotlib.pyplot as plt DNA_SIZE = 50 # DNA length POP_SIZE = 1000 # population size CROSS_RATE = 0.8 # mating probability (DNA crossover) MUTATION_RATE = 0.003 # mutation probability N_GENERATIONS = 200 Mu_BOUND = [25, 40] # […]

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Development

Read dinamically CSV files in Python

How I read CSV’s files dinamically in Python, when change the suffix name files? Example: import pandas as pd uf = [‘AC’, ‘AL’, ‘AP’, ‘AM’, ‘BA’, ‘CE’, ‘DF’, ‘ES’, ‘GO’, ‘MA’, ‘MT’, ‘MS’, ‘MG’, ‘PA’, ‘PB’, ‘PR’, ‘PE’, ‘PI’, ‘RJ’, ‘RN’, ‘RS’, ‘RO’, ‘RR’, ‘SC’, ‘SP1’, ‘SP2’, ‘SE’, ‘TO’] for n in uf: {n} = […]

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Development

Getting Duplicate Labeled Points on Scatterplot in R

I am trying to use kmeans to show what states have similar statistics with one another from the Lahman database, my code is as follows: battingInfo <- Batting %>% filter(yearID >= 1999) total <- merge(battingInfo,People,by=”playerID”) totalN <- total[,-c(24,25,28:47)] filterByState <- totalN %>% group_by(birthState) %>% summarise(players = length(playerID)) newMerge <- merge(totalN, filterByState, by=”birthState”) newTest <- newMerge […]

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Development

fmt std::string displayed as numbers

I tried to format a simple string that will be displayed in the console long long duration = end – start; double ms = static_cast<double>(duration) * 0.001; std::string resoult = fmt::format(“{} => Duration: {} micro, {} ms”, m_Info.c_str(), duration, ms); AE_TRACE(resoult); where m_Info is std::string, duration is long long and ms is double. The resoult […]

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Development

Run compute heavy task in parallel without waiting for result in C#

I am creating a customized implementation handler for HTTP requests that should execute time consuming (50ms per request) code in parallel. I don’t need to return anything to the user so my only concern is fast execution on a seperate CPU core. This is the Configure implementation: public void Configure(IApplicationBuilder app){ app.Run(context => { return […]

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Development

How to “pause” during merge sort to visualize JS p5js

Im working on a sorting visualizer using p5.js, and I need to know if its possible to slow down merge sort so it can be drawn slower. Im currently trying to use the sleep function below to slow down they merge function, but I get Uncaught TypeError: a.slice is not a function. Am I just […]

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Development

Updateview setting user to null

When using updateview for some reason my user value is being set to null. I have a create view where the user is automatically set to the current user and when I view the database everything works as expected. The issue is that when I use updateview the value is being reset to null. All […]