[REBOL] Re: ignore
From: petr:krenzelok:trz:cz at: 26-Jun-2001 23:47
----- Original Message -----
From: <[ryan--christiansen--intellisol--com]>
To: <[rebol-list--rebol--com]>
Sent: Tuesday, June 26, 2001 10:16 PM
Subject: [REBOL] ignore
> Would it be useful to have a REBOL native word 'ignore?
>
> ignore: func [][]
>
> Why? Because it can be used in if error? try statements, like as
follows...
> if error? try [publisher-email-address: get-email-address page][
> ignore
> ]
If you don't want to have your own mezzanine, you could probably use:
none
or
does [none]
it is readable enough ... on the other hand having another standard
mezzanies would not hurt, e.g.:
->> time-of: func [time][fourth time]
->> time-of now
== 23:36:57
->> words-of: func [object][next first object]
->> probe words-of system
->> values-of: func [object][next second object]
->> probe values-of system ; better don't do this one :-)
if not exists? - it is not correct english, you could easily define:
->> doesn't: :not
->> exist?: :exists?
->> if doesn't exist? %/C/ble.txt [print "ble.txt doesn't exist :-)"]
ble.txt doesn't exist :-)
Sometimes as the most confusing concept of Rebol seems to be polymorphism.
Typical example is 'first - it can be used in many situation, with different
results (first on series, first on object, first on function, first on port,
first on routine, structure ....)
-pekr-
