staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

khelll

#!/bin/bash
###############################################
# To use: 
# chmod +x install-redis.sh
# ./install-redis.sh
###############################################
version=3.2.0

echo "*****************************************"
echo " 1. Prerequisites: Install updates, set time zones, install GCC and make"

harlow

Golang Workers / Job Queue

A running example of the code from:

• http://marcio.io/2015/07/handling-1-million-requests-per-minute-with-golang
• http://nesv.github.io/golang/2014/02/25/worker-queues-in-go.html

This gist creates a working example from blog post, and a alternate example using simple worker pool.

TLDR: if you want simple and controlled concurrency use a worker pool.

hbasria

# Bulk deletes keys start with "prefix"  
EVAL "for i, name in ipairs(redis.call('KEYS', 'prefix*')) do redis.call('DEL', name); end" 0

# Bulk renames keys start with "prefix" to "postfix". 
# e.g. prefixwithtail -> postfixwithtail
EVAL "for i, name in ipairs(redis.call('KEYS', 'prefix*')) do local x = string.gsub(name, 'pre', 'post'); redis.call('RENAME', name, x); end" 0

KristofferEriksson

import { useCallback, useEffect, useRef, useState } from "react";

/**
 * Custom React hook for double-click confirmation for critical actions.
 *
 * @param action - The action to be executed on the second click.
 * @param timeout - Time in milliseconds to reset the unlocked state.
 * @returns The current unlocked state and the trigger function.
 */
const useConfirmation = (action: () => void, timeout: number = 5000) => {

KristofferEriksson

import { useCallback, useEffect, useState } from "react";

// Types for the useShare hook parameters
interface UseShareParams {
  onShare?: (content: ShareParams) => void;
  onSuccess?: (content: ShareParams) => void;
  onError?: (error: any) => void;
  fallback?: () => void;
  successTimeout?: number;
}

KristofferEriksson

import { useEffect, useState } from "react";

type UseTextSelectionReturn = {
  text: string;
  rects: DOMRect[];
  ranges: Range[];
  selection: Selection | null;
};

const getRangesFromSelection = (selection: Selection): Range[] => {

t3dotgg

// Types for the result object with discriminated union
type Success<T> = {
  data: T;
  error: null;
};

type Failure<E> = {
  data: null;
  error: E;
};