Bitpacked Structures:
The first time I've seen bitpacked structures (arrays & records) was on the
pascal compiler for Control Data machines, about 1980.
If I remember right, it was the original ETH Zürich compiler, made by someone
of the Wirth staff.
( the keyword BITPACKED was not used, it was done by PACKED)
GPC also has bitpacked stuctures.
Greetings
Gerhard
----- Original Message -----
From: leledumbo
To: fpc-pascal@lists.freepascal.org
Sent: Tuesday, February 10, 2009 5:56 AM
Subject: [fpc-pascal] Origin of FPC features
I'm writing a paper about FPC and I need references where each language
feature comes from. So far, these are my what I know (some are guessing
though):
Feature Original Dialect Additional Information
Separate compilation UCSD Pascal Unit based, not module (like Extended
Pascal)
Primitive OOP Turbo Pascal C++ like
Modern OOP (including exceptions) Delphi Java like, though FPC was born
before Java ;-)
Assembler integration UCSD? Turbo? AT&T and Intel
External references UCSD? Turbo? -
Operator overloading Pascal-XSC -
Function / Procedure overloading Delphi -
Dynamic arrays Delphi -
Variants Delphi -
Arrays as parameter enhancements Delphi Open arrays, partial arrays
Bitpacked Structures Native FPC -
Generics Native FPC -
Thread Programming Native FPC? Delphi? Bringing threads to language
level
In case I miss something that you know, please add. Note that these features
are related with language construct, not technical one (i.e. compiling speed,
makefiles).
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