Adding code snippet in Code Snippet Library (Xcode 10)

to create a snippet you can do it in the following way:

1. menu editor and select Create Code Snippet:

2. In the box that appears, fill all the information of your snippet:

if you want your variables to be highlighted in gray you have to surround the variable in the following way, <# name #>:

example:

public let <#name#>: <#type#>

After some time found out.

Select the code you want to add to library. Right-click on it and click on Create Code Snippet from the pop-up menu.

Apparently upto Xcode 9.x.x, this option was not there.

For Xcode 10 to make a Snippet,

1) Select the resign of code you want to reuse in future.

2) Click the right button.

3) In the context menu, select "Create Code Snippet". The Snippet Library will appear with a new snippet created.