On Windows, RubyInstaller gives you everything you need to set up a full Ruby development environment. Just download it, run it, and you are done! RailsInstaller and Ruby Stack. If you are installing Ruby in order to use Ruby on Rails, you can use the following installers.
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Step 4 - Download the Latest Version of Xcode From my experiences, the biggest gotcha is when you try to install a new version of Ruby with RVM, and you're met with a handful of confusing errors. Most of the time, this is the result of Apple's Xcode not being installed on your system, or, if it is, not being the current version.

A shell script to build fancy DMGs.

Status and contribution policy

This project is maintained thanks to the contributors who send pull requests, and now (Sep 2018) with the help of @aonez.

We will merge any pull request that adds something useful and does not break existing things, and will often grant commit access to the repository.

If you're an active user and want to be a maintainer, or just want to chat, please ping us at gitter.im/create-dmg/Lobby.

Installation

You can install this script using Homebrew:
You can download the latest release
You can also clone the entire repository:

Usage

All contents of source_folder will be copied into the disk image.

Options:

--volname [name]: set volume name (displayed in the Finder sidebar and window title)
--volicon [icon.icns]: set volume icon
--background [pic.png]: set folder background image (provide png, gif, jpg)
--window-pos [x y]: set position the folder window
--window-size [width height]: set size of the folder window
--text-size [text size]: set window text size (10-16)
--icon-size [icon size]: set window icons size (up to 128)
--icon [file name] [x y]: set position of the file's icon
--hide-extension [file name]: hide the extension of file
--custom-icon [file name]/[custom icon]/[sample file] [x y]: set position and custom icon
--app-drop-link [x y]: make a drop link to Applications, at location x, y
--ql-drop-link [x y]: make a drop link to /Library/QuickLook, at location x, y
--eula [eula file]: attach a license file to the dmg
--rez [rez path]: specify custom path to Rez tool used to include license file
--no-internet-enable: disable automatic mount&copy
--format: specify the final image format (default is UDZO)
--add-file [target name] [path to source file] [x y]: add additional file (option can be used multiple times)
--add-folder [target name] [path to source folder] [x y]: add additional folder (option can be used multiple times)
--disk-image-size [x]: set the disk image size manually to x MB
--hdiutil-verbose: execute hdiutil in verbose mode
--hdiutil-quiet: execute hdiutil in quiet mode
--sandbox-safe: execute hdiutil with sandbox compatibility and don not bless
--version: show tool version number
-h, --help: display the help

Example

Alternatives

Download Ruby For Windows

see the StackOverflow question

Xcode 11 includes everything you need to create amazing apps and to bring your apps to even more devices. Take advantage of SwiftUI, an all-new user interface framework with a declarative Swift syntax. Start bringing your iPad app to Mac with just a click. And with support for Swift packages, Xcode 11 lets you share code among all of your apps or use packages created by the community.

SwiftUI

Better apps. Less code.

SwiftUI is an innovative, exceptionally simple way to build user interfaces across all Apple platforms with the power of Swift. Build user interfaces for any Apple device using just one set of tools and APIs. With a declarative Swift syntax that’s easy to read and natural to write, SwiftUI works seamlessly with new Xcode design tools to keep your code and design perfectly in sync. SwiftUI is truly native, so your apps directly access the proven technologies of each platform to beautifully implement everything users love about the Apple ecosystem.

Declarative syntax. Write simpler code with a declarative Swift syntax that clearly states what your user interface should do.

Design tools. Drag and drop to construct or edit your interface. Quickly make changes to visual UI elements with pop-up inspectors.

Native on all Apple platforms. Your apps gain incredible native performance and take advantage of the proven technologies, controls, and user experiences of Apple platforms to feel fully integrated.

Live mode. See your design change instantly in one or many exact previews. Switch the design canvas to live mode to instantly interact with your running app in Xcode or on a connected device.

Bring your iPad App to Mac

Xcode makes it easy to get a huge head start on turning your existing iPad app into a native Mac app. Your Mac and iPad apps share the same project and source code, so any changes you make translates to both platforms. And your newly created Mac app runs natively, utilizing the same frameworks, resources, and even runtime environment as apps built just for Mac.

Swift and Swift Packages

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Swift packages are integrated throughout all of Xcode 11, making it incredibly simple to use a package in your apps for Apple platforms. Just add a new package dependency to add an external package to your project., then clone the package from GitHub, Bitbucket, GitLab, or your own code host. Xcode checks the package dependencies and displays all the packages you use directly in the navigator.

It’s also easy to create your own packages to use with projects based on your own code, or to share with the world. Source code you put in these packages will be built into any apps that depend on the package, with support for all Apple platforms. Code in the package is still easy to debug, test, and use with source code management.

Dark Mode for iPhone and iPad

Dark Mode has been beautifully integrated throughout iOS, and Xcode 11 gives you powerful tools to easily support dark mode in your apps. Quickly switch your designs and previews between light and dark in Interface Builder, and preview both modes in SwiftUI, even side-by-side. Asset catalogs let you label assets and named colors with variants for light and dark. And you can switch your app in and out of dark mode while debugging. This is all done using controls within Xcode that only apply to your app, with no need to change your system settings.

Your Editor, Your Layout

Whether you prefer a single editor or split your windows into a precisely-arranged mosaic, Xcode 11 gives you total control over your coding area and the ability to split any editor pane. Editors can also show SwiftUI previews, live views of playgrounds, and a myriad of assistants. If you need to focus on just one file, you can click-zoom to maximize the pane, and return to exactly where you were before. The new minimap sidebar shows a birds-eye view of the open file, including highlights that make it easy to jump to the right place.

Your code looks better than ever with documentation comments with bold and italics rendered inline with your code. You can even inspect the differences in your current source edits compared to past versions, with a comparison view that updates as you type.

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In-depth Testing

Download Ruby Devkit

The updated Devices window lets you simulate your users’ env

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