[REBOL] Re: defining words ==> was:{Re: Teaching Rebol => was:{Re: Re: Parsing c
From: al:bri:xtra at: 27-Sep-2002 10:59
Laurent wrote:
> This has nothing to do with the previous subject but I am very interested
in knowing how this is useful to you, could you explain it a bit ?
Perhaps a more useful example:
>> do ask "Please enter an example script: "
Please enter an example script: set 'Foo "Hello!" print Foo
Hello!
>> foo
== "Hello!"
Which is a primitive Rebol console written in Rebol.
Here's another more useful example, for a database using Rebol block! values
to hold name values pairs.
>> X: [ ; Only one record.
[ Name "Andrew"
[ Email [Al--Bri--NoSpam--xtra--co--nz]
[ ]
== [
Name "Andrew"
Email [Al--Bri--NoSpam--xtra--co--nz]
]
>> foreach [Name Value] X [set Name Value]
== [Al--Bri--NoSpam--xtra--co--nz]
>> Name
== "Andrew"
>> Email
== [Al--Bri--NoSpam--xtra--co--nz]
Usually the 'foreach would be 'do-ne inside a object! which is the context
for all words stored in the database. That object is the prototype for the
stored records.
Andrew Martin
ICQ: 26227169 http://valley.150m.com/
