WEB PROGRAMMING LANGUAGES

DYLAN

The Dylan programming language is a multi-paradigm language that includes support for functional and object-oriented programming, and is dynamic and reflective while providing a programming model designed to support efficient machine code generation, including fine-grained control over dynamic and static behaviors. It was created in the early 1990s by a group led by Apple Computer.Dylan derives from Scheme and Common Lisp and adds an integrated object system derived from the Common Lisp Object System (CLOS). In Dylan, all values (including numbers, characters, functions, and classes) are first-class objects.

PERL

Perl is described as a compiled scripting language. It combines elements of C with some Unix scripting and text manipulation languages (e.g. sh, awk, sed) into a more complete language that subsumes the functionality of all into one consistent whole, and is compilable, and, therefore faster than its forebears. Perl's advocates tout its ease of use when comparing it to Java, especially. One of the motivations in developing Perl was to provide an alternative to C for tasks that were a little too hairy for an existing Unix tool, or where performance was an issue. C was seen as unnecessarily low level, and C development too time consuming. Perl tries to delay the need to program at a a lower level. Its been very successful, especially among system administrators. Since CGI scripts are often built by systems folks, Perl is widely used for this, too.

TELESCRIPT

Telescript is General Magic's interpreted, object-oriented language with for remote programming. It uses an active agents paradigm. Agent programs are sent to places where they execute, possibly in conjunction with other agents. Agents can move themselves to new places to execute, taking their state with them. Places are subprocesses associated with a Telescript Engine, which is a server program which may be integrated with an HTTP server (with CGI) to produce what they describe as an active web server. This is similar architecturally to ParcPlace's VisualWave and IBM's WWWParts, both for Smalltalk.Like Java, Telescript is safe and platform-independent.

PYTHON

Python is an interpreted, object-oriented language developed as a full-featured, but easy to use, scripting language, by Guido van Rossum at CWI in the Netherlands. Initially developed in a Unix environment, Python is now available on PCs and Macs, and applications are portable across platforms. Python has developed a substantial, although still modest, following, as a scripting language, an application development language, and an embedded extension language. Python's design was most influenced by ABC, a little known language also developed at CWI. Python's syntax evokes C and C++, but doesn't stick too closely to those languages. Like Java, Perl and Tcl, Python offers a portable GUI library, several really. Perl advocates complain about the lack of regular expression matching and output formatting natively in Python. Perl is a little more of a sysadmin's shell language than Python, and Tcl is a little simpler and less capable. Python is more of a regular programming language, but simpler and easier to program than Java.

EIFFEL

Eiffel is an ISO-standardized, object-oriented programming language designed to enable programmers to develop extensible, reusable, reliable software efficiently. Eiffel is used in academia as a language for teaching computer-programming principles. Eiffel is used in the finance, aerospace, health-care, video-gaming, and other industries as a development platform. Since 1985, many suppliers have developed Eiffel programming environments.

The design of the language is closely connected with the Eiffel programming method. Both are based on a set of principles, including design by contract, command-query separation,uniform-access principle, single-choice principle, open-closed principle, and option-operand separation.

PERL VS. PYTHON

>>Perl tends to be cryptic and hard to read. Of course a good programmer will write more legible code than a bad one, but Perl's power is reflected in its complex syntax and many operator symbols, while Python has a simple, elegant base language, and the power resides in its library.

>>Python was designed from the start as an object-oriented language. Perl 5 has some object-oriented  features added on, but it looks to me like an awkward retrofit. Python has well-implemented object-oriented features for multiple inheritance, polymorphism, and encapsulation.

SAMPLE SOURCE CODE OF PERL

print "Hello World\n";

SAMPLE SOURCE CODE OF PYTHON

print "Hello World"

source: Wikipedia and Google