At 08:01 -0700 2007/05/24, Joey K Tuttle wrote:
At 09:46 -0400 2007/05/24, Raul Miller wrote:
On 5/23/07, Joey K Tuttle <[EMAIL PROTECTED]> wrote:
In Unix/Linux/Darwin I find the following 2!: cover convenient/essential
host =: [: 2!:0 '(' , ' || true)' ,~ ]
Does this do anything better than
host0=: 2!:0 ::0:
?
Well, not that I can think of (Martin?) - just a way to get a
result back from the j verb when the requested host expression
failed. Yours is shorter and very nice - even a useful result
if one checks for numeric result (impossible as a result of
remote execution - I think) indicating an error. Maybe not as
handy if building a result in jspace by catenating successive
calls, but I don't remember ever doing that.
Since the standard error comes back in addition to the
ADverse result, I would be inclined to make the failure
result 2: (or something other than 0 which usually indicates
all ok -- but that it a minor matter of taste.)
After spending a few hours finding a bug in a production
application. I changed my mind about the numeric failure
code from a verb that normally returns a string (and had
previously returned an empty on remote failure). So even
though the more concise definition looks "nicer" I have
reverted to using my older/longer definition. As it turns
out, the standard error stream was useless too since the
error occurred in a CGI script...
- joey
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