| // UITextField | |
| let textField = UITextField() | |
| textField.addAction( | |
| UIAction { action in | |
| let textField = action.sender as! UITextField | |
| print(textField.text ?? "") | |
| }, | |
| for: .editingChanged | |
| ) |
Ventura docs for M2 Macs in this comment: https://gist.github.com/henrik242/65d26a7deca30bdb9828e183809690bd?permalink_comment_id=4555340#gistcomment-4555340
Old Monterey docs in this old revision: https://gist.github.com/henrik242/65d26a7deca30bdb9828e183809690bd/32c410e3a1de73539c76fa13ea5486569c4e0c5d
Solution for Sonoma: https://gist.github.com/sghiassy/a3927405cf4ffe81242f4ecb01c382ac
| $ cd ~ # home directory で作業 | |
| $ sudo apt-get install clang libicu-dev libcurl4 | |
| $ wget https://swift.org/builds/swift-4.2-release/ubuntu1804/swift-4.2-RELEASE/swift-4.2-RELEASE-ubuntu18.04.tar.gz | |
| $ tar xvpf swift-4.2-RELEASE-ubuntu18.04.tar.gz | |
| $ export PATH=~/swift-4.2-RELEASE-ubuntu18.04/usr/bin:$PATH |
The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).
My take-aways are:
You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.
Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse
| import React, { Component } from 'react' | |
| import { Redirect } from 'react-router' | |
| export default class ContactForm extends Component { | |
| constructor () { | |
| super(); | |
| this.state = { | |
| fireRedirect: false | |
| } | |
| } |
| awk ' | |
| BEGIN { | |
| buffer="" | |
| } | |
| { | |
| gsub(/<\/*trk>/,"",$0) | |
| gsub(/<\/*trkseg>/,"",$0) | |
| gsub(/<trkpt/,"<wpt", $0) | |
| gsub(/<\/trkpt>/,"<\/wpt>", $0) | |