Useful alternative control structures?

Question

Sometimes when I am programming, I find that some particular control structure would be very useful to me, but is not directly available in my programming language. I think my

Answer 1

I think I should mention CityScript (the scripting language of CityDesk) which has some really fancy looping constructs.

From the help file:

{$ forEach n var in (condition) sort-order $}
... text which appears for each item ....
{$ between $}
.. text which appears between each two items ....
{$ odd $}
.. text which appears for every other item, including the first ....
{$ even $}
.. text which appears for every other item, starting with the second ....
{$ else $}
.. text which appears if there are no items matching condition ....
{$ before $}
..text which appears before the loop, only if there are items matching condition
{$ after $}
..text which appears after the loop, only of there are items matching condition
{$ next $}