groz

Elm - Friendly functional programming for the Web


Intro
====
- I'm just learning
- Evan Czaplicki, Harvard, programming for the Web doesn't have to be painful
- Ideas from academia
- Rocks the FP community boat by making ideas approachable

groz

package main

import "fmt"

func main() {
  m := make(map[int]int)
  m[1] = 0
  for k, v := range m {
    m[k + k] = v
  }

groz

const backoff = (maxRetries, delayFunction) =>
  attempts => attempts
    .zip(Rx.Observable.range(1, maxRetries), (a, idx) => idx)
    .delayWhen(idx => Rx.Observable.timer(delayFunction(idx)));

// usage
const withIncrementalBackoff = observable.retryWhen(backoff(3, nRetry => nRetry * 1000));
const withExponentialBackoff = observable.retryWhen(backoff(3, nRetry => nRetry * nRetry * 1000));

groz

import Foundation

func query(address: String) -> String {
    let url = URL(string: address)
    let semaphore = DispatchSemaphore(value: 0)
    
    var result: String = ""
    
    let task = URLSession.shared.dataTask(with: url!) {(data, response, error) in
        result = String(data: data!, encoding: String.Encoding.utf8)!

groz

Рассмотрим функцию query

func query(address: String) -> String {
    let url = URL(string: address)
    let semaphore = DispatchSemaphore(value: 0)
    
    var result: String = ""
    
    let task = URLSession.shared.dataTask(with: url!) {(data, response, error) in

groz

ChatGPT-4 example

Tagir Magomedov:

Напиши функцию на C#, которая выполняет поиск пути во взвешенном ориентированном графе.

ChatGPT:

Для поиска кратчайшего пути во взвешенном ориентированном графе, одним из популярных алгоритмов является алгоритм Дейкстры. Вот пример реализации алгоритма Дейкстры на C#:

using System;