<s>
Interactive	B-Application
programming	I-Application
is	O
the	O
procedure	O
of	O
writing	O
parts	O
of	O
a	O
program	O
while	O
it	O
is	O
already	O
active	O
.	O
</s>
<s>
This	O
focuses	O
on	O
the	O
program	O
text	O
as	O
the	O
main	O
interface	B-Application
for	O
a	O
running	O
process	O
,	O
rather	O
than	O
an	O
interactive	B-General_Concept
application	I-General_Concept
,	O
where	O
the	O
program	O
is	O
designed	O
in	O
development	O
cycles	O
and	O
used	O
thereafter	O
(	O
usually	O
by	O
a	O
so-called	O
"	O
user	O
"	O
,	O
in	O
distinction	O
to	O
the	O
"	O
developer	O
"	O
)	O
.	O
</s>
<s>
It	O
thus	O
forms	O
a	O
specific	O
instance	O
of	O
interactive	O
computation	O
as	O
an	O
extreme	O
opposite	O
to	O
batch	B-General_Concept
processing	I-General_Concept
,	O
where	O
neither	O
writing	O
the	O
program	O
nor	O
its	O
use	O
happens	O
in	O
an	O
interactive	O
way	O
.	O
</s>
<s>
Interactive	B-Application
programming	I-Application
techniques	O
are	O
especially	O
useful	O
in	O
cases	O
where	O
no	O
clear	O
specification	O
of	O
the	O
problem	O
that	O
is	O
to	O
be	O
solved	O
can	O
be	O
given	O
in	O
advance	O
.	O
</s>
<s>
Interactive	B-Application
programming	I-Application
has	O
also	O
been	O
used	O
in	O
applications	O
that	O
need	O
to	O
be	O
rewritten	O
without	O
stopping	O
them	O
,	O
a	O
feature	O
which	O
the	O
computer	O
language	O
Smalltalk	B-Application
is	O
famous	O
for	O
.	O
</s>
<s>
Generally	O
,	O
dynamic	B-Language
programming	I-Language
languages	I-Language
provide	O
the	O
environment	O
for	O
such	O
an	O
interaction	O
,	O
so	O
that	O
typically	O
prototyping	O
and	O
iterative	O
and	O
incremental	O
development	O
is	O
done	O
while	O
other	O
parts	O
of	O
the	O
program	O
are	O
running	O
.	O
</s>
<s>
More	O
recently	O
,	O
researchers	O
have	O
been	O
using	O
this	O
method	O
to	O
develop	O
sonification	B-General_Concept
algorithms	O
.	O
</s>
<s>
Using	O
dynamic	B-Language
programming	I-Language
languages	I-Language
for	O
sound	O
and	O
graphics	O
,	O
interactive	B-Application
programming	I-Application
is	O
also	O
used	O
as	O
an	O
improvisational	O
performance	O
style	O
live	O
coding	O
,	O
mainly	O
in	O
algorithmic	O
music	O
and	O
video	O
.	O
</s>
<s>
An	O
example	O
of	O
some	O
code	O
in	O
the	O
dynamic	B-Language
programming	I-Language
language	I-Language
SuperCollider	B-Application
is	O
available	O
.	O
</s>
