| # ============================================================================= | |
| # Title: DexScreener Crypto Live Prices Scraper | |
| # Description: This script scrape the first 200 h6 trending Solana pairs from DexScreener — every 10 seconds | |
| # Author: Sasha Bouloudnine | |
| # Date: 2024-03-13 | |
| # | |
| # Usage: | |
| # - Install websocket using `pip install websockets`. | |
| # - Launch the script. | |
| # |
| #! /bin/bash | |
| # sudo apt-get install ffmpeg | |
| # if ffmpeg is not installed, install it | |
| if ! [ -x "$(command -v ffmpeg)" ]; then | |
| sudo apt-get install ffmpeg | |
| fi | |
| # if no arguments are given, print usage |
The EventSource API
The EventSource interface is used to receive server-sent events. It connects to a server over HTTP and receives events in text/event-stream format without closing the connection.
https://developer.mozilla.org/en-US/docs/Web/API/EventSource
Last-Event-ID
Setting an ID lets the browser keep track of the last event fired so that if, the connection to the server is dropped, a special HTTP header (Last-Event-ID) is set with the new request.
| from __future__ import print_function | |
| import platform | |
| import sys | |
| import threading | |
| import time | |
| class UnsyncedBankAccount(object): | |
| """Bank account with no synchronization lock, prone to race condition.""" |
In your command-line run the following commands:
brew doctorbrew update
| package main | |
| import ( | |
| "net/http" | |
| "os" | |
| "bytes" | |
| "path" | |
| "path/filepath" | |
| "mime/multipart" | |
| "io" |
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
| /** | |
| * Converts an RGB color value to HSL. Conversion formula | |
| * adapted from http://en.wikipedia.org/wiki/HSL_color_space. | |
| * Assumes r, g, and b are contained in the set [0, 255] and | |
| * returns h, s, and l in the set [0, 1]. | |
| * | |
| * @param Number r The red color value | |
| * @param Number g The green color value | |
| * @param Number b The blue color value | |
| * @return Array The HSL representation |