Re: verbing properties (Bb's call)

• Date: Mon, 1 Apr 1996 18:50:22 PST
• From:
  slayer@kaiwan.com
• Content-Type: text/plain; charset="us-ascii"

At 06:33 PM 4/1/96 PST, Richard Godard wrote:
>At 20:48 4/1/96,  (Seth I. Rich) wrote:
>>  function set_property_value(OBJ object, STR property-name, value)
>>  Sets <object>.<property-name> to <value>, if it exists and is
>>  writable with the programmer's permissions, else returns E_PERM
>>  or E_PROPNF or E_INVIND as appropriate.  Handles built-in
>
>Would this solve the problem ?
>... else raise E_PERM  or E_PROPNF or E_INVIND...
>
>so set_property_value(me, "description", E_PERM) => return E_PERM
>and set_property_value(me, "location", E_PERM) => raise E_PERM
>
>Since all verb should be +d, only catching the error would be needed :-)
>
yeah but..
`raise(E_PERM) ! E_PERM' -> E_PERM
`E_PERM ! E_PERM' -> E_PERM

how would you differentiate between a caught error and a return value?
maybe something like what eval returns.. {success, result} where success is
0 or 1 depending on success.

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