Ada includes a loop ...exit construct. PL/I also includes a similar loop ...break construct. Is there a similar construct in Python or Java? Are these constructs examples of ant of the design principles? Should a language require the declaration of variables? Languages such as Lisp and Python allow variable names to be used without declarations, while C, Java, and Ada require all variables to be declared. Discuss the requirement that variables should be declared from the point of view of readability, writability, efficiency, and security.
Here are two more opposing statements:
A program should never run with error checking turned off. Turning off error checking after a program has been tested is like throwing away the life preserver when graduating from the pool to the ocean.
A program should always have error checking turned off after the testing stage. Keeping error checking on is like keeping training wheels on a bike after you've entered a race.
In most language implementations, the integer data type has a fixed size, which means that the maximum size of an integer is machine dependent. In some languages like Scheme, however, integers may be of any size, and so become machine independent. Discuss the advantages and disadvantages of making such "infinite-precision" integers a requirement of a language definition. Is it possible to also implement "infinite-precision" real numbers? Can real numbers be made machine independent? Discuss.