When I tried your example I got a result for the variable x when it was
not defined. That's a neat trick! You probably timed a variable that
differed from the "fox" sentence as our results are quite different. Also,
my results are also not as close as you indicated.
state=: 3 2 2$ 1 1 2 1 2 0 2 2 1 0 2 2
S=:0;state;<a.={.a
(S&;: -: <;.1) k=:' the quick brown fox jumps over the lazy dog'
1
timer=: 6!:2
10 timer '<;.1 x'
5.85968e_6
10 timer 'S&;: x'
7.87111e_6
x
|value error: x
timer '<;.1 '' the quick brown fox jumps over the lazy dog'''
1.61333e_5
timer 'S&;: '' the quick brown fox jumps over the lazy dog'''
2.57016e_5
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Roger Hui
Sent: Thursday, March 08, 2012 10:05 PM
To: Programming forum
Subject: Re: [Jprogramming] Sequential Machine
Yes it is. The example looks strange because the first character of a is
"a", not normally used as a separator. If the first character is a blank
(say), then it looks more normal. e.g.
state=: 3 2 2$ 1 1 2 1 2 0 2 2 1 0 2 2
a=: ' a good way to start the day'
(0;state;<a.={.a);:a;:a
---T-----T----T---T------T----T----┐
│ a│ good│ way│ to│ start│ the│ day│
L--+-----+----+---+------+----+-----
<;.1 a
---T-----T----T---T------T----T----┐
│ a│ good│ way│ to│ start│ the│ day│
L--+-----+----+---+------+----+-----
S=: 0;state;<a.={.a
(S&;: -: <;.1) a
1
(S&;: -: <;.1) ' the quick brown fox jumps over the lazy dog'
1
x=: 1e6$' the quick brown fox jumps over the lazy dog'
(S&;: -: <;.1) x
1
Now the thing that surprised me when I saw it the first time:
timer=: 6!:2
10 timer '<;.1 x'
0.0630174
10 timer 'S&;: x'
0.0675069
<;.1 is implemented using hand-coded C.
2012/3/8 Linda Alvord <[email protected]>
> Roger, I'm not sure that this is what you had in mind.
>
>
> a=:'a good way to start the day'
> <;.1 a
> ---------T--------T---------T--┐
> │a good w│ay to st│art the d│ay│
> L--------+--------+---------+---
> state=: 3 2 2$ 1 1 2 1 2 0 2 2 1 0 2 2
> (0;state;<a.={.a);:a
> ---------T--------T---------T--┐
> │a good w│ay to st│art the d│ay│
> L--------+--------+---------+---
>
>
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