If you're going to make up a half-assed domain-specific scripting language, here are some things you need to include in version 1.0 even if you think you will never need them and nobody else will ever use it:
- iteration over the *values* in arrays, not only the indices
- ditto for the values in associative arrays
- a way to append values to an array
- a way to print to stderr
- a way to print some text without appending a newline
- a way to accept arbitrary command line options
</rant>
Also, if you have strong types and make a distinction between signed and unsigned integers, and your documentation clearly states that vectors are indexed by unsigned integers, then iterating over the indices of a vector should _not_ yield signed integers. Particularly if there are no cast operators in the language. No, this is not a hypothetical. #facepalm
