Multi-cursor editing in Xcode 10

The best way to use it is by using the Select Next Occurrence command from the Find menu.

Its default keyboard shortcut is alt + cmd + e, but you could set it to cmd + d to mimic Sublime Text's behavior.

This way, you can edit code lines that are different, whereas the solutions in the other answers only allow you to edit similar lines.

For example, if you have this code:

NSString *myStringg = @"stringg"; // print the stringg NSLog(@"Here is my stringg: %@", myStringg); 

you simply:

1. manually select the first Stringg occurrence from the first line using the cursor
2. hit the Select Next Occurrence's keyboard shortcut 4 times
3. hit the right arrow key
4. hit backspace

and you'll have:

NSString *myString = @"string"; // print the string NSLog(@"Here is my string: %@", myString); 

Usages

(1) Edit CodingKey

using Option ⌥ + drag

(2) Edit method parameter indentation

using Shift ⇧ + Control ⌃ + click

Related Defaults

$ defaults write com.apple.dt.Xcode PegasusMultipleCursorsEnabled -bool true 

Reference

1. https://sarunw.com/posts/multi-cursor-editing-in-xcode/
2. https://github.com/ctreffs/xcode-defaults
3. Mac keyboard shortcuts https://support.apple.com/en-us/HT201236

Shift + Ctrl + click when you wish to edit same text in file for multiple times e.g

 option_A.isEnabled = false option_B.isEnabled = false option_C.isEnabled = false option_D.isEnabled = false 

in this i have to put true on all four lines then it should be better for to put true at once by using shift + control + click rather than edit each line

There is also a keyboard shortcut available for those like me who use cmd + Shift + L in Sublime.

It's called Selection - Split Selection By Lines. I set it to cmd + Shift + L but I had to set the Show Library shortcut to something else random that I don't use to resolve the conflict.