<s>
In	O
computer	O
programming	O
,	O
Yoix	B-Language
is	O
a	O
high-level	B-Language
,	O
general-purpose	B-Language
,	O
interpreted	B-Application
,	O
object-based	B-Language
,	O
dynamic	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
The	O
Yoix	B-Language
interpreter	B-Application
is	O
implemented	O
using	O
standard	O
Java	B-Language
technology	I-Language
without	O
any	O
add-on	O
packages	O
and	O
requires	O
only	O
a	O
Sun-compliant	O
JVM	B-Language
to	O
operate	O
.	O
</s>
<s>
Initially	O
developed	O
by	O
AT&T	O
Labs	O
researchers	O
for	O
internal	O
use	O
,	O
it	O
has	O
been	O
available	O
as	O
free	O
and	O
open	B-Application
source	I-Application
software	I-Application
since	O
late	O
2000	O
.	O
</s>
<s>
In	O
1998	O
,	O
Java	B-Language
technology	I-Language
was	O
still	O
emerging	O
:	O
the	O
Swing	O
toolkit	O
was	O
an	O
add-on	O
package	O
;	O
interruptible	O
I/O	O
,	O
regular	O
expressions	O
,	O
and	O
a	O
printf	O
capability	O
were	O
not	O
yet	O
features	O
;	O
nor	O
had	O
Java	B-Language
Web	O
Start	O
been	O
developed	O
.	O
</s>
<s>
Moreover	O
,	O
Java	B-Language
scripting	O
languages	O
were	O
largely	O
non-existent	O
at	O
that	O
time	O
:	O
Groovy	O
and	O
JRuby	O
had	O
not	O
yet	O
been	O
invented	O
and	O
Jython	O
had	O
just	O
been	O
created	O
in	O
late	O
1997	O
.	O
</s>
<s>
Browsers	B-Application
in	O
1998	O
had	O
limited	O
feature	O
sets	O
,	O
were	O
too	O
unstable	O
for	O
production	O
use	O
in	O
an	O
8-hour	O
shift	O
and	O
were	O
still	O
fighting	O
skirmishes	O
in	O
the	O
Browser	B-Application
Wars	O
.	O
</s>
<s>
In	O
this	O
environment	O
,	O
Yoix	B-Language
technology	O
was	O
created	O
in	O
response	O
to	O
a	O
pressing	O
need	O
for	O
a	O
reliable	O
,	O
easy	O
to	O
distribute	O
and	O
maintain	O
,	O
GUI	B-Application
front-end	O
for	O
a	O
mission-critical	O
application	B-Application
being	O
developed	O
within	O
AT&T	O
,	O
namely	O
its	O
Global	O
Fraud	O
Management	O
System	O
,	O
which	O
to	O
this	O
day	O
monitors	O
and	O
tracks	O
fraud	O
activity	O
related	O
to	O
voice	O
traffic	O
on	O
T	O
's	O
expanding	O
networks	O
:	O
wireline	O
,	O
wireless	O
,	O
and	O
IP	O
.	O
</s>
<s>
Yoix	B-Language
technology	O
was	O
first	O
released	O
to	O
the	O
public	O
in	O
late	O
2000	O
under	O
the	O
Open	B-Application
Source	I-Application
Initiative	O
Common	O
Public	O
License	O
V1.0	O
.	O
</s>
<s>
The	O
Yoix	B-Language
name	O
came	O
about	O
partially	O
from	O
the	O
fox	O
hunting	O
cry	O
of	O
encouragement	O
to	O
the	O
hounds	O
,	O
partially	O
to	O
echo	O
another	O
familiar	O
four-letter	O
name	O
that	O
ends	O
in	O
ix	O
,	O
and	O
partially	O
to	O
avoid	O
too	O
many	O
false-positives	O
in	O
a	O
Google	O
search	O
.	O
</s>
<s>
Yoix	B-Language
technology	O
provides	O
a	O
pure	O
Java	B-Language
programming	I-Language
language	I-Language
implementation	O
of	O
a	O
general	O
purpose	O
dynamic	B-Language
programming	I-Language
language	I-Language
developed	O
by	O
researchers	O
at	O
AT&T	O
Labs	O
.	O
</s>
<s>
Its	O
syntax	O
and	O
grammar	O
should	O
be	O
easy	O
to	O
learn	O
for	O
those	O
familiar	O
with	O
the	O
C	B-Language
programming	I-Language
language	I-Language
and	O
Java	B-Language
.	O
</s>
<s>
To	O
an	O
end-user	O
,	O
a	O
Yoix	B-Language
application	B-Application
is	O
indistinguishable	O
from	O
a	O
Java	B-Language
application	B-Application
,	O
but	O
to	O
the	O
application	B-Application
developer	I-Application
Yoix	B-Language
should	O
provide	O
a	O
simpler	O
coding	O
experience	O
than	O
working	O
in	O
Java	B-Language
directly	O
,	O
much	O
like	O
writing	O
Perl	B-Language
code	O
can	O
be	O
simpler	O
than	O
writing	O
C	B-Language
code	O
.	O
</s>
<s>
The	O
Yoix	B-Language
language	O
is	O
not	O
an	O
object	B-Language
oriented	I-Language
language	I-Language
,	O
but	O
makes	O
use	O
of	O
over	O
165	O
object	O
types	O
that	O
provide	O
access	O
to	O
most	O
of	O
the	O
standard	O
Java	B-Language
classes	O
.	O
</s>
<s>
Because	O
the	O
Yoix	B-Language
interpreter	B-Application
is	O
built	O
entirely	O
using	O
Java	B-Language
technology	I-Language
,	O
it	O
means	O
that	O
Yoix	B-Language
applications	O
are	O
cross-platform	B-Operating_System
,	O
GUI-capable	O
and	O
both	O
network	B-Architecture
and	O
thread	B-Operating_System
friendly	O
,	O
yet	O
Yoix	B-Language
developers	B-Application
find	O
themselves	O
insulated	O
from	O
the	O
more	O
complex	O
and	O
error-prone	O
parts	O
of	O
coding	O
the	O
same	O
functionality	O
directly	O
in	O
Java	B-Language
.	O
</s>
<s>
It	O
does	O
not	O
use	O
reflection	O
to	O
access	O
Java	B-Language
functionality	O
and	O
thus	O
adds	O
value	O
by	O
not	O
only	O
simplifying	O
access	O
to	O
that	O
functionality	O
,	O
but	O
also	O
improving	O
application	B-Application
reliability	O
by	O
coding	O
through	O
both	O
Java	B-Language
glitches	O
and	O
complicated	O
Java	B-Language
features	O
one-time	O
,	O
behind-the-scenes	O
.	O
</s>
<s>
The	O
Yoix	B-Language
language	O
includes	O
safe	O
pointers	O
,	O
addressing	O
,	O
declarations	O
,	O
and	O
global	O
and	O
local	O
variables	O
.	O
</s>
<s>
In	O
addition	O
to	O
supporting	O
native	O
user	O
functions	O
,	O
users	O
can	O
add	O
their	O
own	O
builtin	O
functions	O
written	O
in	O
Java	B-Language
.	O
</s>
<s>
The	O
two	O
central	O
elements	O
in	O
the	O
Yoix	B-Language
design	O
are	O
borrowed	O
from	O
the	O
PostScript	B-Language
language	I-Language
:	O
dictionaries	O
as	O
language	O
components	O
and	O
permissions-protected	O
dictionaries	O
as	O
exposed	O
system	O
components	O
.	O
</s>
<s>
Another	O
key	O
Yoix	B-Language
design	O
element	O
involves	O
pointers	O
and	O
addressing	O
.	O
</s>
<s>
Pointers	O
and	O
pointer	O
arithmetic	O
in	O
the	O
Yoix	B-Language
language	O
is	O
syntactically	O
similar	O
to	O
what	O
is	O
found	O
in	O
the	O
C	B-Language
language	I-Language
,	O
but	O
the	O
Yoix	B-Language
implementation	O
prevents	O
using	O
a	O
pointer	O
outside	O
its	O
bounds	O
.	O
</s>
<s>
Overall	O
,	O
the	O
Yoix	B-Language
design	O
attempted	O
to	O
make	O
the	O
language	O
easy	O
to	O
learn	O
by	O
programmers	B-Application
experienced	O
with	O
the	O
C	B-Language
and	O
Java	B-Language
languages	I-Language
.	O
</s>
<s>
The	O
Yoix	B-Language
distribution	O
includes	O
the	O
Yoix	B-Language
Web	O
Application	B-Application
Instant	O
Template	O
(	O
YWAIT	O
)	O
,	O
a	O
software	B-Architecture
framework	I-Architecture
for	O
building	O
a	O
Yoix	B-Language
web	O
application	B-Application
.	O
</s>
<s>
A	O
Yoix	B-Language
web	O
application	B-Application
resides	O
on	O
a	O
web	B-Application
server	I-Application
and	O
is	O
downloaded	O
piecemeal	O
at	O
run-time	B-Library
on	O
an	O
as-needed	O
basis	O
by	O
Yoix	B-Language
interpreters	B-Application
running	O
on	O
client	B-Protocol
machines	I-Protocol
.	O
</s>
<s>
This	O
model	O
,	O
analogous	O
to	O
the	O
familiar	O
model	O
of	O
client	O
web	B-Application
browsers	I-Application
downloading	O
a	O
website	O
piecemeal	O
as-needed	O
at	O
run-time	B-Library
,	O
permits	O
simple	O
,	O
efficient	O
distribution	O
and	O
maintenance	O
of	O
applications	O
and	O
relies	O
only	O
on	O
the	O
ubiquitous	O
web	B-Application
server	I-Application
and	O
the	O
Yoix	B-Language
interpreter	B-Application
.	O
</s>
<s>
Building	O
a	O
web	O
application	B-Application
using	O
the	O
YWAIT	O
framework	O
requires	O
just	O
a	O
few	O
standard	O
Unix	B-Application
tools	O
available	O
in	O
most	O
modern	O
operating	B-General_Concept
systems	I-General_Concept
,	O
such	O
as	O
Linux	B-Application
or	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
or	O
under	O
Microsoft	B-Application
Windows	I-Application
with	O
the	O
help	O
of	O
add-on	O
packages	O
such	O
as	O
U/Win	B-Application
.	O
</s>
<s>
The	O
client	O
side	O
of	O
a	O
YWAIT-based	O
application	B-Application
relies	O
only	O
on	O
the	O
Yoix	B-Language
interpreter	B-Application
and	O
is	O
thus	O
platform	B-Operating_System
independent	I-Operating_System
,	O
running	O
wherever	O
Java	B-Language
runs	O
.	O
</s>
<s>
Because	O
the	O
Yoix	B-Language
software	O
development	O
philosophy	O
aims	O
to	O
keep	O
things	O
simple	O
by	O
eschewing	O
the	O
popular	O
tendency	O
for	O
multiple	O
embedded	O
specialized	O
languages	O
and	O
the	O
YWAIT	O
framework	O
permits	O
easy	O
,	O
incremental	O
screen	O
development	O
in	O
a	O
simple	O
,	O
logical	O
source	O
tree	O
hierarchy	O
,	O
development	O
of	O
a	O
Yoix	B-Language
web	O
application	B-Application
is	O
reduced	O
to	O
the	O
basics	O
:	O
a	O
command	O
prompt	O
and	O
a	O
text	O
editor	O
.	O
</s>
<s>
IDE	B-Application
enthusiasts	O
may	O
be	O
nonplussed	O
,	O
but	O
this	O
Small	O
Is	O
Beautiful	O
approach	O
to	O
software	O
development	O
has	O
been	O
highly	O
effective	O
in	O
practice	O
at	O
AT&T	O
.	O
</s>
<s>
In	O
addition	O
to	O
its	O
role	O
as	O
a	O
tool	O
for	O
building	O
GUI	B-Application
applications	O
,	O
Yoix	B-Language
technology	O
supports	O
several	O
modes	O
of	O
data	B-Application
visualization	I-Application
.	O
</s>
<s>
A	O
data	B-Application
visualization	I-Application
module	O
called	O
YDAT	O
(	O
Yoix	B-Language
Data	O
Analysis	O
Tool	O
)	O
has	O
been	O
included	O
in	O
the	O
public	O
Yoix	B-Language
distribution	O
since	O
release	O
2.1.2	O
.	O
</s>
<s>
YDAT	O
is	O
able	O
to	O
display	O
graphs	O
generated	O
by	O
the	O
GraphViz	B-Language
graph	O
drawing	O
and	O
layout	O
tool	O
,	O
which	O
is	O
another	O
open	B-Application
source	I-Application
tool	O
freely	O
available	O
from	O
AT&T	O
Labs	O
.	O
</s>
<s>
YDAT	O
is	O
highly	O
configurable	O
at	O
the	O
Yoix	B-Language
language	O
level	O
.	O
</s>
<s>
The	O
image	O
below	O
is	O
a	O
screenshot	O
of	O
a	O
Yoix	B-Language
YDAT	O
instantiation	O
,	O
which	O
in	O
this	O
example	O
is	O
being	O
used	O
to	O
analyze	O
vehicle	O
auction	O
transactions	O
.	O
</s>
<s>
Yoix	B-Language
technology	O
provides	O
good	O
support	O
for	O
graph	O
drawing	O
.	O
</s>
<s>
In	O
addition	O
to	O
graph	O
display	O
mentioned	O
above	O
as	O
part	O
of	O
the	O
YDAT	O
module	O
,	O
data	O
types	O
in	O
the	O
Yoix	B-Language
language	O
support	O
building	O
,	O
manipulating	O
and	O
traversing	O
graph	O
structures	O
.	O
</s>
<s>
Native	O
Yoix	B-Language
functions	O
support	O
the	O
DOT	B-Application
language	I-Application
output	O
and	O
a	O
built-in	O
DOT	B-Application
language	I-Application
parser	B-Language
to	O
facilitate	O
interaction	O
with	O
the	O
GraphViz	B-Language
layout	O
engines	O
.	O
</s>
<s>
The	O
YChart	O
data	B-Application
visualization	I-Application
toolkit	O
was	O
added	O
to	O
the	O
Yoix	B-Language
distribution	O
with	O
release	O
2.2.0	O
.	O
</s>
<s>
Two	O
interactive	O
YChart	O
applications	O
contained	O
in	O
the	O
Yoix	B-Language
distribution	O
are	O
a	O
and	O
a	O
.	O
</s>
<s>
A	O
program	O
to	O
demonstrate	O
using	O
YChart	O
with	O
variable	O
width	O
cells	O
,	O
as	O
might	O
occur	O
with	O
a	O
schedule	O
,	O
is	O
also	O
available	O
in	O
the	O
Yoix	B-Language
distribution	O
.	O
</s>
<s>
The	O
Yoix	B-Language
distribution	O
also	O
includes	O
a	O
Yoix	B-Language
package	O
,	O
called	O
Byzgraf	O
,	O
for	O
rendering	O
basic	O
data	B-Application
plots	I-Application
such	O
as	O
line	O
charts	O
,	O
histograms	O
and	O
statistical	O
box	O
plots	O
.	O
</s>
<s>
As	O
currently	O
implemented	O
,	O
the	O
Yoix	B-Language
language	O
is	O
interpreted	B-Application
,	O
which	O
means	O
that	O
,	O
for	O
example	O
,	O
it	O
is	O
probably	O
not	O
the	O
right	O
choice	O
for	O
computationally	O
intensive	O
applications	O
unless	O
one	O
codes	O
those	O
computations	O
in	O
a	O
Java	B-Language
module	O
extension	O
.	O
</s>
<s>
Similarly	O
,	O
excessive	O
looping	O
will	O
also	O
display	O
the	O
limitations	O
of	O
this	O
interpreted	B-Application
language	I-Application
.	O
</s>
<s>
The	O
focus	O
of	O
the	O
language	O
is	O
interactive	O
standalone	O
or	O
client/server	O
GUI	B-Application
and	O
data	B-Application
visualization	I-Application
applications	O
.	O
</s>
<s>
Yoix	B-Language
technology	O
is	O
free	O
software	O
licensed	O
under	O
the	O
Open	B-Application
Source	I-Application
Initiative	O
Common	O
Public	O
License	O
.	O
</s>
<s>
Yoix	B-Language
is	O
a	O
registered	O
trademark	O
of	O
At&T	O
Inc	O
.	O
</s>
<s>
Extract	O
all	O
HTML	B-Language
directives	O
from	O
the	O
AT&T	O
home	O
page	O
and	O
write	O
them	O
to	O
standard	O
output	O
.	O
</s>
<s>
Build	O
and	O
display	O
a	O
GUI	B-Application
with	O
two	O
buttons	O
in	O
a	O
titled	O
frame	O
(	O
i.e.	O
,	O
window	O
)	O
that	O
also	O
has	O
a	O
titled	O
border	O
.	O
</s>
<s>
The	O
code	O
shown	O
here	O
was	O
used	O
to	O
generate	O
the	O
Yoix	B-Language
logo	B-Device
image	O
in	O
PNG	O
format	O
that	O
can	O
be	O
seen	O
in	O
the	O
language	O
description	O
box	O
near	O
the	O
top	O
of	O
this	O
page	O
.	O
</s>
<s>
Command-line	B-Application
arguments	O
allow	O
the	O
size	O
of	O
the	O
image	O
to	O
be	O
specified	O
as	O
well	O
as	O
select	O
between	O
PNG	O
image	O
output	O
or	O
display	O
in	O
an	O
on-screen	O
window	O
.	O
</s>
