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pickle is a standard module which serializes & de-serializes a python object structure.
pickle module accepts any python object converts it into a string representation & dumps it into a file(by using dump() function) which can be used later, process is called pickling. Whereas unpickling is process of retrieving original python object from the stored string representation for use.

Hi,
I think the above answer will not work for java script as
per my knowledged.
$variable_name are used in php but not in javascript. To
acheive the requirement in java just remove $ symbols.
var a="hello";
var b="world";
var concat= a+b; alert(concat);

HI Rajeshwar,
you are right. $variable work in php. not in javascript.
var a="hello";
var b="world";
var concat= a+b;
document.writeln(concat);

Array is called the collection of similar datatypes because
we can not add an object of some other type where as the
array which is declared is of another type.
For e.g
We declare a Integer array then we can not add an object of
type string into that array.We have to add an object of type
string only.