Sorry about the sloppy message earlier. Things go wrong when hurrying to
get ready to go shopping.
My proposal: That (13!:8), instead of displaying the statement containing
the signal (13!:8) which is the statement at the top of the stack that it
display the next statement in the stack, the one using the explicit
definition incorrectly. All else is unchanged.
Here is a simple script to illustrate:
NB.*signal v gives an error message showing the second line in the stack.
NB. Only for demo purposes of what the message should look like
NB. Not sufficient for practical use.
NB. It displays 1{13!:18'' instead of 0{13!:18''
signal=:3 : 0
NB. Display statement on top of stack followed by system defined message.
echo ((<:y)((;@{) :: ('Error'"_))9!:8'')
echo 1{13!:18''
13!:0]0
:
NB. Display statement on top of stack followed by user defined message.
echo x
echo 1{13!:18''
13!:0]0
)
f1=:3 : 0
if. 4=3!:0 y
do. >:+:y
else. 'the argument is not an integer'(13!:8)123
end.
)
f2=:3 : 0
if. 4=3!:0 y
do. >:+:y
else. 'the argument is not an integer' signal 123
end.
)
NB. End of script _________________
NB. f1 and f2 perform some calculations for integers, but they give an
error if y is not an integer.
3+f1 1 2 3
6 8 10
3+f2 1 2 3
6 8 10
NB. Both f1 and f2 give no error when y is integer
3+f1 'text'
|the argument is not an integer: f1
| 'the argument is not an integer' (13!:8)123
NB. f1 gives an error message.
NB. The second line shows the statement containing (13!:8) in f1, the top
of the stack.
3+f2 'text'
the argument is not an integer
| 3+ f2'text'
NB. f2 shows the next line in the stack which shows the statement using f2
improperly.
NB. Compare this to using the primitive + below.
3+'text'
|domain error
| 3 +'text'
Notice that the error message for f2 looks like the primitive + error
message which is showing the statement that is using f2 improperly or in a
way that it is not intended.
On Wed, Jun 1, 2016 at 2:34 PM, Henry Rich <[email protected]> wrote:
> You have my suggestion right; don't know about Don's.
>
> Henry Rich
>
> On 6/1/2016 2:32 PM, Raul Miller wrote:
>
>> Compare these two error cases:
>>
>> 3 :''0
>> |domain error
>> | 3 :''0
>> 3 :'''example''13!:8]9'0
>> |example
>> | 'example' 13!:8]9
>>
>> In the first error, the error message is followed by the line
>> containing the error.
>>
>> If I understand your proposal, I think you would have the second
>> example look like this:
>> 3 :'''example''13!:8]9'0
>> |example
>>
>> If I understand Don Guinn's counter proposal, I think the second
>> example would look like this:
>> 3 :'''example''13!:8]9'0
>> |example
>> | 3 :'''example''13!:8]9'0
>>
>> Let me know if I have misunderstood?
>>
>> Thanks,
>>
>>
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