My intuition on this is that OS X and its applications aren't designed to operate in multiple instances. When two processes are making changes to the same preference.plist files concurrently, you might get unintended behavior. Some applications are designed to work in a 'project library' setup, like GarageBand and the new iMovie (these applications can only work on one project at a time), but if Xcode allows you to open multiple projects at the same time, that's definitely the way to go.
![Mac Mac](http://www.belatrixsf.com/blog/wp-content/uploads/2017/11/How-to-easily-build-an-Angular-5-app-using-Visual-Studio-Code-Belatrix-Software.jpg)
![Mac Mac](/uploads/1/2/5/4/125402603/695167896.png)
Almost all document-based applications work this way, ex: Office, TextEdit, Safari. If you're new to Mac, it will soon become apparent that a window is not the same thing as a running application. A single application may have many windows at a time, and closing all of those windows individually does not necessarily close the application (though this will occasionally be the case, see System Preferences.) Instead of switching between windows with alt-tab, you switch between applications with Command-Tab, and switch between that application's open windows with Command-` (backtick, on the key). When closing applications, get into the habit of choosing quit from the application menu (or hitting Command-Q) instead of x-ing out of every open window. In most cases this would leave the application still running with 0 open windows. Running applications are denoted with a glowing light under their dock icons, and will also show up in the Command-Tab application switcher.
Protip: to quit multiple applications quickly, hold down Command, use Tab or shift-Tab to select each application you want to close, and whack q to send each one a quit command. Then release tab to switch to the application you want to use when it is selected.
Open multiple solutions or instances of Visual Studio for Mac.; 2 minutes to read Contributors. In this article. By default, all applications on a Mac, including Visual Studio for Mac, are single-instance apps. This means that if the application you want to use is already open (illustrated by a dot under the icon in the dock), selecting the icon again opens the running instance. May 23, 2017 - This means that on Windows Xamarin developers can open multiple instances of Visual Studio at the same time, allowing them to have multiple solutions open. On the Mac this ability has been missing - you click VS again and it just focuses on the same instance that's already running.
Table of Contents. Next, type in shell command, select Install Code Command in PATH, and press enter. Now if you type in code, Visual Studio Code will open, and code, Visual Studio Code will open with the directory represented by Path. To see the command line interface however, type in code -h. Code -h Visual Studio Code 1.25.1 Usage: code options paths.
To read from stdin, append '-' (e.g. 'ps aux grep code code -') Options: -d, -diff Compare two files with each other.a, -add Add folder(s) to the last active window.g, -goto Open a file at the path on the specified line and character position.n, -new-window Force to open a new window.r, -reuse-window Force to open a file or folder in an already opened window.w, -wait Wait for the files to be closed before returning.locale The locale to use (e.g. En-US or zh-TW).user-data-dir Specifies the directory that user data is kept in.
Can be used to open multiple distinct instances of Code.v, -version Print version.h, -help Print usage. I've truncated the output above, but there's more to it. You can read through the commands and what they do, but you can see there are some very useful and handy tools in there. We'll look at one -diff. Ever wanted to see the difference between two files, Let's look at an example. Here are two files with a slight difference in them.