Here are some code snippets using interpolation that you may find useful to put in your toolbox. While these are specific to Perl, it's easy to see how they could be adapted to other languages. Note that these snippets ask you to fill in the blanks as you code and help speed up development by taking care of some of the mundane tasks (like adding comments at the end of a conditional block).

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Perl elsif:

elsif ([[%ask1:Condition:1]]) {
    # Do this when true
} ## END OF elsif ([[%ask1]])

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Perl foreach

foreach [[%ask1:IndexVariable:$i]] ([[%ask2:ArrayVariable:@list]]) {
    # Do something with [[%ask1]]
} # END OF foreach [[%ask1]] ([[%ask2]])

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Perl if/else

if ([[%ask1:Condition:1]]) {
    # True
}
else { # else from if ([[%ask1]])
    # Otherwise
} # END OF if ([[%ask1]])

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Perl sub (no POD)

##############################################################################
# [[%ask:Describe this subroutine:What does it do?]]
sub [[%ask1:Subroutine Definition:my_sub()]] {
    # Do something here
} ## END OF [[%ask1]]

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Perl sub (with POD)

##############################################################################
=item C<[[%ask1:Subroutine Definition:my_sub()]]>

[[%ask:Describe this subroutine:What does it do?]]

=cut

sub [[%ask1]] {
    # Do something here
} ## END OF [[%ask1]]

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Perl while

# What is ths while about?
while ([[%ask1:Condition]]) {
    # Code goes here
} ## END OF while ([[%ask1]])

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If you can think of others you think would be useful, please feel free to contribute them here. These snippets of code, created by myself, Kevin Benton are entered into the public domain.