Could Python supplant Java?

Will Newton will at misconception.org.uk
Wed Aug 21 18:40:23 CEST 2002


On Wednesday 21 Aug 2002 5:13 pm, James J. Besemer wrote:

> The trade-off is that in exchange for pre declaring your types
> the compiler detects and helps eliminate this class of bugs even
> before you run your unit test.  The cost of declaring ahead of
> time is small and the gain to be had (vs. debugging each of the
> corresponding runtime errors) can be significant.

IMO it's another case of the 80/20 rule. Syntax errors in C++ generally would 
fall firmly in the 80% of bugs that take only 20% of the time to locate and 
fix. As anyone who has debugged large quantities of C/C++ can tell you, just 
because a program compiles it is not bug free, and the bugs that are likely 
left are the hard ones to track down. If it came down to a straight trade-off 
between a grabage-collected, pointer-less language and a statically typed 
language with pointers I can guarantee that the debugging time of the former 
will be far less than the latter. When you factor in interpreted versus 
compile-link-debug type of systems you will see Python does not suffer from 
being dynamically typed at all.

So yes, I agree that static typing can catch bugs, but they are usually quite 
trivial typos or cut and paste errors (const excepted). However I also 
believe that the reduced lines of code and development time mean that to code 
and debug in Python is, in my experience, much faster than to code and debug 
in C++ or C.




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