gohanlon

Swift’s memberwise initializer and the extension dance

Swift's automatically provided memberwise initializer is a powerful feature. However, when an explicit initializer is present, Swift omits its memberwise initializer:

struct Person: Decodable {
  let name: String

  enum CodingKeys: CodingKey {
    case name

gohanlon

import ComposableArchitecture
import Dependencies
import SwiftUI

// Based on Isowords's `ComposableGameCenter.LiveKey.LocalPlayerClient.live`:
// https://github.com/pointfreeco/isowords/blob/main/Sources/ComposableGameCenter/LiveKey.swift#L80

struct AuthClient {
  enum AuthStatus {
    case loggedIn

gohanlon

#if canImport(UIKit)
  import SnapshotTesting
  import SwiftUI

  public func assertCurrentDeviceSnapshot<SnapshotContent: View>(
    for view: SnapshotContent,
    precision: Float = 1,
    record: Bool = false,
    file: StaticString = #file,
    testName: String = #function,

gohanlon

import Combine
import ComposableArchitecture
import SwiftUI

struct LoginFormState: Equatable {
  var username: String = ""
  var password: String = ""
  var focusedField: Field?

  enum Field: Hashable {

gohanlon

~ % brew list       
autoconf			imagemagick			mono				qt				the_silver_searcher
cmake				jpeg				node				rbenv				tmux
ctags				libevent			openssl				rcm				tree
freetype			libpng				pcre				readline			vim
gdbm				libtiff				pkg-config			reattach-to-user-namespace	xz
git				libtool				postgresql			redis				youtube-dl
heroku-toolbelt			libyaml				python				ruby-build			z
hub				llvm				python3				sqlite				zsh

gohanlon

# Laptop install from master, as of: https://github.com/thoughtbot/laptop/commit/8066ffa1b3f56e6b571d91979c30c0e2ba61498d

Changing your shell to zsh ...
Changing shell for wm.

Fixing OSX zsh environment bug ...

WARNING: Improper use of the sudo command could lead to data loss
or the deletion of important system files. Please double-check your
typing when using sudo. Type "man sudo" for more information.

gohanlon

This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by PostgreSQL configure 9.3.5, which was
generated by GNU Autoconf 2.63.  Invocation command line was

  $ ./configure --disable-debug --prefix=/usr/local/Cellar/postgresql/9.3.5_1 --datadir=/usr/local/Cellar/postgresql/9.3.5_1/share/postgresql --docdir=/usr/local/Cellar/postgresql/9.3.5_1/share/doc/postgresql --enable-thread-safety --with-bonjour --with-gssapi --with-ldap --with-openssl --with-pam --with-libxml --with-libxslt --with-perl --with-tcl --with-ossp-uuid

## --------- ##
## Platform. ##

gohanlon

clang called with: -E -
superenv executed: clang -E - -isystem/usr/include/libxml2 -isystem/System/Library/Frameworks/OpenGL.framework/Versions/Current/Headers -I/usr/local/opt/ossp-uuid/include -I/usr/local/opt/openssl/include -I/usr/local/opt/readline/include

clang called with: --version
superenv executed: clang -pipe -Os -march=native --version -isystem/usr/include/libxml2 -isystem/System/Library/Frameworks/OpenGL.framework/Versions/Current/Headers -I/usr/local/opt/ossp-uuid/include -I/usr/local/opt/openssl/include -I/usr/local/opt/readline/include -L/usr/local/opt/ossp-uuid/lib -L/usr/local/opt/openssl/lib -L/usr/local/opt/readline/lib -L/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries -Wl,-headerpad_max_install_names

clang called with: -v
superenv executed: clang -v

clang called with: -V

gohanlon

2014-09-05 11:45:59 -0700

./configure
--disable-debug
--prefix=/usr/local/Cellar/postgresql/9.3.5_1
--datadir=/usr/local/Cellar/postgresql/9.3.5_1/share/postgresql
--docdir=/usr/local/Cellar/postgresql/9.3.5_1/share/doc/postgresql
--enable-thread-safety
--with-bonjour
--with-gssapi

gohanlon

$ brew --config
HOMEBREW_VERSION: 0.9.5
ORIGIN: https://github.com/Homebrew/homebrew
HEAD: cd33c4ba2fac5c67edd6360508e25e8d9703203f
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
CPU: dual-core 64-bit haswell
OS X: 10.10-x86_64
CLT: 6.0.0.0.1.1409104523
Clang: 6.0 build 600