jQuery.map() string as callback parameter is broken

[flexer]

If the argument is a string, it is treated as a short "lambda-form" function, with "a" representing the list item. For example, "a * a" may be passed instead of "function(a){ return a * a; }".

This is broken even in the docs Demo:  http://docs.jquery.com/Utilities/jQuery.map

[davidserduke]

Thanks for pointing that out. The demo has been fixed.

For more information about why this feature was removed see #2402.