#TURBO PASCAL INSTAL THE NEW VERSION FOR IPOD CODE#

Pascal was a one pass compiler while almost all other languages make multiple passes through the code or intermediate outputs. Bootstrapping was a boon for computer science students as it provided them with a working compiler they could extend and hack but was still small enough to comprehend.

From there you can write the additional features in the language itself. Out comes an executable that will now compile itself. Once the hand written compiler works you can feed its executable the compiler code written in the new language. That compiler is then hand written in another language, probably Fortran for that time frame. A bootstrapped language’s compiler is written in itself, using the smallest subset possible. Being visually oriented I really liked that representation.Īn interesting feature is Pascal was bootstrapped into existence. This included showing it in Backus-Naur Form, and a novel graphic representation that became known as railroad diagrams. The language was so compact it was completely described and defined in a 58 page book, almost a pamphlet. – From Programming Language Design To Computer Construction, Niklaus Wirth 1984 ACM A.M. Only by actually doing a development project can I gain enough familiarity with the intrinsic difficulties and enough confidence that the inherent details can be mastered. Working without the constraints of a standards committee he pared Algol down to the bones to create Pascal.Įvery single project was primarily a learning experiment. I’d love to hear his opinion of Java and C++. Pascal was a rebellion against Algol 60, which he felt was overly complicated and not useful for real work. The creator of Pascal,, was something of an iconoclast of his times. Join me for a walk down the memory lane that got our programming world to where it is today. Seeing that book years later on an Italian coworker’s bookshelf translated to Italian gave my mind a minor boggling. For some reason, two co-authors never were mentioned, unlike the later duo of & with their white “The C Programming Language”.

In the early 70s, mentioning or the yellow book brought to mind Pascal. Algol was always more popular outside the US, probably because everyone there stuck with FORTRAN.īack then certain books held iconic status, much like black FORTRAN IV. APL was referred to as a ‘write only language’ because it was often easier to simply rewrite a piece of code than to debug it.Īnother language deserving mention is Algol, if only because Pascal is a descendant, along with many modern languages. Given how cryptic regular expressions are it’s amazing another language from that time, APL – A Programming Language, didn’t survive. SNOBOL was a text processing language that basically lost out to AWK, PERL, and regular expressions. Of those, SNOBOL quickly faded but the others are still around. I never did any COBOL but did some work with Pascal, Forth, and SNOBOL which are from that era. These originals are still used although none make the lists of popular languages.

It also reminded me of other languages from my time at college and shortly thereafter, say pre-1978.Īt that time there were the three original languages – FORTRAN, LISP, and COBOL. My article on Fortran, This is Not Your Father’s FORTRAN, brought back a lot of memories about the language.

Turbo Pascal instal the new version for ipod