Mac Technique: External keyboard configuration for Home and End keys

To configure the [Home] and [End] keys of an external USB keyboard to move the cursor to the front or the end of line in Xcode, try:

1. create the following path:

~/Library/KeyBindings/

2. Create a file called DefaultKeyBinding.dict in this directory with:

{
    "\UF729" = moveToBeginningOfParagraph:; // home
    "\UF72B" = moveToEndOfParagraph:; // end
    "$\UF729" = moveToBeginningOfParagraphAndModifySelection:; // shift-home
    "$\UF72B" = moveToEndOfParagraphAndModifySelection:; // shift-end
}

With this solution, holding a [Shift] key and [Home]/[End] makes a selection for the characters to the beginning or end of the line.

References:

Remap “Home” and “End” to beginning and end of line
Mac OS X and Home / End keys