Here are differences between Interpreter and HyperCard. These are the
planned ones; these are here by design. Does anyone think they will be a
major problem?
Additional constants:
e [anyone have a better character for this?] 2.718281828459
// anyone have a better e? I tried to generate one with
// (1+1/big_number)^(big_number) but HC underflowed...
newline -- proper newline sequence for host OS (CR, LF, or CRLF)
backspace -- ASCII code for backspace character (we call it
delete on the Mac, but that's a keyword)
Problematic constants:
What to do about 'return'! It's a problem because it is a keyword AND
a constant. Presently, at the beginning of the line it is the keyword
and anywhere else a constant.
Note: HyperCard defines return as ASCII 13, and thus so does OC.
Slightly different constants:
In HyperCard, pi is a string. In OpenCard, pi is a real.
Limits:
Item HyperCard Interpreter
Maximum nested repeats 32 -
Active variables 512 *
Maximum variable name size 31 -
Maximum script size 30,000 -
*presently 64, but will be unsigned LongInt (~ 4 billion) by release.
