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import * as React from 'react'
import { createPortal } from 'react-dom'

type FrameProps = React.IframeHTMLAttributes<HTMLIFrameElement> & {
  head?: React.ComponentType<any>
  children?: React.ReactNode
}
const Frame = React.memo(({head, children, ...iframeProps}: FrameProps)=> {
  const node = React.useRef<HTMLIFrameElement>()
  const [doc, setDoc] = React.useState<Document>()

ggrumbley

Regex and You: Matching an HTML Tag

Regular expressions, ever versatile, will help up locate HTML tags in a string today.

Summary

Pattern matching HTML strings serves at least one crucial function in web dev: sanitizing user input. Allowing user-submitted strings opens one's application to significant vulnerability. Supposing, for example, some ne'er-do-well on the internet submitted a comment that includes <script src="[path]/stealYourData.js"></script>. Regular expressions allow us to match HTML tags in a string, because HTML tags conform to a certain pattern:

• begin and end with brackets (<>)
• contain a string name consisting of one or more lowercase letters, like p, a, div, strong, script

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58 bytes of CSS to look great nearly everywhere

When making this website, i wanted a simple, reasonable way to make it look good on most displays. Not counting any minimization techniques, the following 58 bytes worked well for me:

main {
  max-width: 38rem;
  padding: 2rem;
  margin: auto;
}

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-- Two dashes start a one-line comment.

--[[
     Adding two ['s and ]'s makes it a
     multi-line comment.
--]]

----------------------------------------------------
-- 1. Variables and flow control.
----------------------------------------------------

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Array<T>

Legend:

• ✏️ method changes this.
• 🔒 method does not change this.

Array<T>.prototype.*:

• concat(...items: Array): T[] 🔒 ^ES3

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1. Clone your fork:

git clone git@github.com:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

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1. Clone your fork:

git clone git@github.com:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

ggrumbley

SQL to MongoDB Mapping Chart

SQL to MongoDB Mapping Chart¶

In addition to the charts that follow, you might want to consider the Frequently Asked Questions section for a selection of common questions about MongoDB.

Executables¶

The following table presents the MySQL/Oracle executables and the corresponding MongoDB executables.

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Updating a feature branch

First we'll update your local master branch. Go to your local project and check out the branch you want to merge into (your local master branch)

$ git checkout master

Fetch the remote, bringing the branches and their commits from the remote repository. You can use the -p, --prune option to delete any remote-tracking references that no longer exist in the remote. Commits to master will be stored in a local branch, remotes/origin/master

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"""Script to download free O'Reilly ebooks."""
import asyncio
import os
import re
import sys
import aiohttp

filename_matcher = re.compile(r'http://www.oreilly.com/(.*)/free/(.*).csp')

session = None