[Gretl-devel] Re: argname error
On Thu, 2 May 2019, Allin Cottrell wrote:
On Thu, 2 May 2019, Allin Cottrell wrote:
> On Thu, 2 May 2019, Sven Schreiber wrote:
>
>> not sure why the following fails, given the documentation of 'argname':
>>
>> <hansl>
>> function void ch(matrix m[null], string s[null])
>> if exists(m)
>> eval argname(m)
>> elif exists(s)
>> eval argname(s)
>> endif
>> end function
>>
>> string s_in = "hey"
>> ch(, s_in) # error, expect "s_in"
>
> This is due to an ambivalence specific to string variables.
Well, I now think this (mis)behavior is new, fallout from my recent addition
of an optional second argument to argname(). I'll work on a fix.
Now fixed in git and snapshots. Here's the test script that I'm
adding to my test set so this won't go wrong again unnoticed.
<hansl>
function void strcheck (string s[null])
if exists(s)
eval argname(s, "defaultname")
else
print "no arg, OK"
endif
end function
function void matcheck (matrix m[null])
if exists(m)
eval argname(m, "defaultname")
else
print "no arg, OK"
endif
end function
string main_s = "hey"
strcheck(main_s)
strcheck("lucky")
strcheck()
matrix main_m = I(3)
matcheck(main_m)
matcheck(I(2))
matcheck()
</hansl>
Allin