overview and evolution of scripting languages

8/3/2019 Overview and Evolution of Scripting Languages

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Ahmad Rabbani

Asad IlyasQasir Zeshan


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` They are interpreted or bytecode-interpreted andnever compiled to native code

` The memory handling is done by a garbagecollector and not by a programmer

` They include high-level data types, such as lists,associative arrays and so on.

` The execution environment can be integrated withthe program being written.

` The scripting programs (or simple, scripts) canaccess modules written in lower-level languages,such as C.


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` They can be Categorized as Command scripting languages

Application scripting languages

Markup languages Universal scripting languages


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`Oldest class of scripting languages

` They appeared in 1960s

` When the need of program and task

control arised


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` They are introduced in early 1980s

` The era of the personal computer when

application such as spreadsheets and database

clients were introduced.` One of the prime examples of these languages is

Microsoft-created Visual Basic language, and

especially its subset named Visual Basic for

Applications, designed explicitly for oceapplications programming.


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`Markup languages are a specialcase in the sense that they are

not a real programminglanguages, but rather a set of special command words called

tags used to mark up parts of text documents


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` The languages that belong to this

class are perhaps the most well-

known.T

he very term scriptinglanguages is associated with them.

Most of these languages were

originally created for the Unixenvironment. The goals however

were dierent.


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` JCL (Job Control Language) Starting from 1960s

Used forScheduling jobs OS/360

Unix shells (sh, csh, ksh, ...) Starting from 1970s

Series of such languages followed it e.g csh and ksh for

next 20 years

They are used to write interactive commands and

automate common tasks


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Rexx Michael Cowlishaw initially conceived the Rexx language

in 1979.

To simplify programming tasks on IBM's CMStimesharing system.

It became popular as a macro language for arbitrary

application programs

its usage spread to many other platforms, including PCs

and Unix.


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` Perl Created by Larry Wall in the late 1980s.

Created for Unix text processing applications such as sh,

sed, and awk.

Later due to emergence of the web it achieved greater

level of success

` TCL John Ousterhou in the late 1980s.

Supplemented witk tk tool used to develop UI on PCswindows and Mac.


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` Visual Basics This Microsoft product lies somewhere between System

development languages and scripting languages,

introduced in mid of 1990s

Largely used to develop UI for windows based

applications .

The combination of Visual Basics and VBX(ActiveX

Control) probably is the most successful framework in

existence.


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` Python It is object oriented language introduces in 1990s

Originally designed as advanced scripted language for

rapid application development for web, databases and

GUI.

` JavaScript Created in the mid 1990s by Netscape Corporation to

perform scripting functions in Web browsers.

Such as simple form validation. JavaScript has becomethe de facto standard for client-side Web scripting.


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` Other scripting Languages After wards many other scripting languages for specific

and rapid development of web application such PHP and

etc.


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QUESTIONS ??


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` http://www.sensi.org/~ak/impit/studies/report.pdf

` http://www2.hawaii.edu/~nreed/ics313/lectures/scr

iptHistory.pdf

` http://en.wikipedia.org/wiki/Scripting_language` http://en.wikipedia.org/wiki/Functional_programmi

ng

overview and evolution of scripting languages

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