ahcode0919

Simctl

An Xcode/CoreSimulator command line utility to control iOS Simulators on MacOS

Command Usage

simctl [--set <path>] [--profiles <path>] <subcommand> ... simctl help [subcommand]

Documented Commands

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ES6 Import / Export

Named Exports / Imports

Exports

// source.js
export function add(a, b) { return a + b; }
export function subtract(a, b) { return a - b; }

ahcode0919

#!/bin/sh

git filter-branch --env-filter '

OLD_EMAIL="email
CORRECT_NAME="name"
CORRECT_EMAIL="email"

if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then

ahcode0919

How-to Create a Ruby CLI Gem

Pre-Setup

1. Create a RubyGems Account
2. Install RVM (Ruby Version Manager) : RVM
3. Install Bundler: gem install bundler

Project Creation

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Git Cheatsheet

Global

• Create origin branch when creating branch git config --global branch.autosetupmerge always
• Add ssh key to keychain to eliminate retyping in password ssh-add -K ~/.ssh/id_rsa

Add files

• Add All Files - git add .

ahcode0919

#!/bin/sh

git filter-branch --env-filter '
OLD_EMAIL="OLD EMAIL ADDRESS"
CORRECT_NAME="NEW NAME"
CORRECT_EMAIL="NEW EMAIL"
if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$CORRECT_NAME"
    export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"

ahcode0919

import UIKit

//Abbreviated OpenAPI product response for example purposes
let jsonData = """
{
    "paging": {
    "total": 8,
    "offset": 0,
    "limit": 40,
    "returned": 8

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//Simple Type - Person
struct Person: Codable {
    let name: String
    let age: Int
    
    func getString() -> String {
        return "Name: \(name), Age: \(age)"
    }
}

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struct Device {
    
    /// Detects if the current architecture is a Simulator
    static let isSimulator: Bool = {
        var isSim = false
        #if arch(i386) || arch(x86_64)
            isSim = true
        #endif
        return isSim
    }()

ahcode0919

extension String {
    func getDecimalDigits(includeDecimal: Bool = true) -> String {
        let set = includeDecimal ? "1234567890.": "1234567890"
        return self.components(separatedBy: CharacterSet(charactersIn: set).inverted).joined()
    }
    
    func lettersOnly() -> String {
        let characterSet = CharacterSet(charactersIn: "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ").inverted