[REBOL] Re: Making series
From: al:bri:xtra at: 20-Oct-2001 8:33
> In Haskell there is a very easy way to create lists.
As too in Rebol:
>> iota 1 5
== [1 2 3 4 5]
Of course, you'll need this, first:
>> source iota
iota: func [
{Makes a block containing a range of values, from Start to End.}
[catch throw]
Start [number! series! money! time! date! char!] "Starting value."
End [number! series! money! time! date! char!] "Ending value."
/By Bump [number! money! time! char!] "Amount to skip each time." /local
Block][
throw-on-error [
all [
none? Bump
Bump: 1
]
Block: make block! End - Start / Bump
for I Start End Bump [
insert tail Block I
]
Block
]
]
And you can do neat things like:
>> iota now now + 3
== [20-Oct-2001/8:32:42+13:00 21-Oct-2001/8:32:42+13:00
22-Oct-2001/8:32:42+13:00 23-Oct-2001/8:32:42+13:00]
:-)
I hope that helps!
Andrew Martin
ICQ: 26227169 http://valley.150m.com/
