Ticket #0000687

Type	Wish	Status	tested	Date	25-Mar-2009 04:55
Version	alpha 38	Category	n/a	Submitted by	BrianH
Platform	All	Severity	minor	Priority	normal

Summary	CONSTRUCT /only option
Description	The behavior of CONSTRUCT in alpha 36 would be useful for data structure construction but is confusing for regular users, so it was changed to be more like R2's CONSTRUCT (better: see #651). It would still be helpful to be able to CONSTRUCT raw data without special-casing. The REBOL way of dealing with this is to provide a /ONLY option. Proposed behavior with /ONLY option: Exactly like the behavior of CONSTRUCT in 2.100.36 - no keywords or conversions - except without throwing an error for unset! values (as R2 doesn't).
Example code	; Desired R3 behavior with /only >> type? get in construct/only [a: true] 'a == word! >> type? get in construct/only [a: false] 'a == word! >> type? get in construct/only [a: on] 'a == word! >> type? get in construct/only [a: off] 'a == word! >> type? get in construct/only [a: yes] 'a == word! >> type? get in construct/only [a: no] 'a == word! >> type? get in construct/only [a: none] 'a == word! >> type? get/any in construct/only head insert tail [a:] () 'a == unset! >> type? get in construct/only [a: b] 'a == word! >> type? get in construct/only [a: 'b] 'a == lit-word! >> type? get in construct/only [a: b/c] 'a == path! >> type? get in construct/only [a: 'b/c] 'a == lit-path!

Summary

CONSTRUCT /only option

Description

The behavior of CONSTRUCT in alpha 36 would be useful for data structure construction but is confusing for regular users, so it was changed to be more like R2's CONSTRUCT (better: see #651).

It would still be helpful to be able to CONSTRUCT raw data without special-casing. The REBOL way of dealing with this is to provide a /ONLY option.

Proposed behavior with /ONLY option: Exactly like the behavior of CONSTRUCT in 2.100.36 - no keywords or conversions - except without throwing an error for unset! values (as R2 doesn't).

Example code

; Desired R3 behavior with /only
>> type? get in construct/only [a: true] 'a
== word!
>> type? get in construct/only [a: false] 'a
== word!
>> type? get in construct/only [a: on] 'a
== word!
>> type? get in construct/only [a: off] 'a
== word!
>> type? get in construct/only [a: yes] 'a
== word!
>> type? get in construct/only [a: no] 'a
== word!
>> type? get in construct/only [a: none] 'a
== word!
>> type? get/any in construct/only head insert tail [a:] () 'a
== unset!
>> type? get in construct/only [a: b] 'a
== word!
>> type? get in construct/only [a: 'b] 'a
== lit-word!
>> type? get in construct/only [a: b/c] 'a
== path!
>> type? get in construct/only [a: 'b/c] 'a
== lit-path!

Assigned to	n/a	Fixed in	alpha 39	Last Update	26-Mar-2009 23:38

Date	User	Field	Action	Change
26-Mar-2009 23:38	BrianH	Status	Modified	built => tested
26-Mar-2009 19:36	carl	Fixedin	Modified	=> alpha 39
26-Mar-2009 19:36	carl	Status	Modified	reviewed => built
25-Mar-2009 05:00	BrianH	Description	Modified	-
25-Mar-2009 05:00	BrianH	Code	Modified	-
25-Mar-2009 05:00	BrianH	Status	Modified	submitted => reviewed
25-Mar-2009 04:55	BrianH	Ticket	Added	-