doug edmunds wrote:
> I am stuck. I have followed along with the "Simple Database" contained in
the Rebol how-to.html file, but I can't manipulate the header object that
save/header load/header creates. I want to make changes and save the data
back, with the header intact.
This should work:
save/header %cities2.r data header
BUT it doesn't work correctly as there's a bug in 'save! Have a look at
REBOL/View's help for 'save:
>> help save
USAGE:
SAVE where value /header header-data
DESCRIPTION:
Saves a value or a block to a file or url.
SAVE is a native value.
ARGUMENTS:
where -- Where to save it. (Type: file url)
value -- Value to save. (Type: any)
REFINEMENTS:
/header -- Save it with a header
header-data -- Header block or object (Type: block object)
With the refinement /header and using an object, 'save saves the data like
this:
>> print read %cities2.r
REBOL
make object! [
Title: "City data"
Date: none
; <SNIP!>
Language: none
User_Groups: "PDX Vanc"
]
Note that "make object!" shouldn't be in the REBOL script file!
Here's a quick example:
>> h: make object! [
[ File: %file.r
[ Date: 7/April/2000
[ ]
>> data: [
[ a: 1
[ b: 2
[ c: 3]
== [
a: 1
b: 2
c: 3]
>> save/header %file.r data h
>> print read %file.r
REBOL
make object! [
File: %file.r
Date: 7-Apr-2000
]
a: 1
b: 2
c: 3
Note that "make object!" shouldn't be in the 'save-ed file!
CC-ed to feedback and to ally list.
Andrew Martin
ICQ: 26227169
http://members.xoom.com/AndrewMartin/
-><-
