| After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work. | |
| The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0." | |
| Database files have to be updated before starting the server, here are the steps that had to be followed: | |
| # need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default | |
| brew unlink postgresql | |
| brew install [email protected] | |
| brew unlink [email protected] | |
| brew link postgresql |
This is a short post that explains how to write a high-performance matrix multiplication program on modern processors. In this tutorial I will use a single core of the Skylake-client CPU with AVX2, but the principles in this post also apply to other processors with different instruction sets (such as AVX512).
Matrix multiplication is a mathematical operation that defines the product of
| // | |
| // Created by https://quickplan.app on 2020/11/8. | |
| // | |
| import SwiftUI | |
| /// Control if allow to dismiss the sheet by the user actions | |
| /// - Drag down on the sheet on iPhone and iPad | |
| /// - Tap outside the sheet on iPad | |
| /// No impact to dismiss programatically (by calling "presentationMode.wrappedValue.dismiss()") |
| extension UIHostingController { | |
| convenience public init(rootView: Content, ignoreSafeArea: Bool) { | |
| self.init(rootView: rootView) | |
| if ignoreSafeArea { | |
| disableSafeArea() | |
| } | |
| } | |
| func disableSafeArea() { |
