(Harder) Yet another use for the const keyword might be to give alternative names for types. Readers may be familiar with languages like Pascal and Modula-2 where code that names types, as exemplified by
is often encouraged, on the basis that it portrays the purpose of the various fields in the Entry record type rather better than the “everything is an integer” approach beloved of C and Java programmers that we have had to adopt in the code in this text. Consider the implications of changing the syntax for ConstDeclarations
The reader might wonder why this simple syntactic change results in it being marked “harder”. The reason is as follows – if this facility is to be of any use, we shall have to extend the production for VarDeclarations as well. At first all that seems necessary is to write
but a little reflection will show that, like this, the grammar is no longer LL (1). Show that it is possible to generate an LL (1) parser by refactorizing the grammar appropriately.
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more