Thanks, Jameson. That explains, why I cannot catch errors, only warnings.
That is, the following code will not (and I verified, it does not) work.
~~~
begin
stderr_orig = STDERR
rd, wr = redirect_stderr()
try
error("HI") ###
finally
redirect_stderr(stderr_orig)
close(wr)
out = readall(rd)
println(length(out),out)
end
end
~~~
Is there a trick to catch the error message and return it in a variable?
On Saturday, June 21, 2014 11:13:51 AM UTC-6, Jameson wrote:
>
> *julia> **begin*
>
> *stderr_orig = STDERR*
>
> *rd, wr = redirect_stderr()*
>
> *try*
>
> *warn("HI")*
>
> *finally*
>
> *redirect_stderr(stderr_orig)*
>
> *close(wr)*
>
> *out = readall(rd)*
>
> *println(length(out),out)*
>
> *end*
>
> *end*
>
> 25*WARNING: HI*
>
>
> *in you example, code, throwing an error does not cause anything to be
> written to stdout, it is a break in control flow that gets caught by the
> REPL, skipping execution of all of the rest of your code.*
>
>
> *Note that the calls to both redirect_stderr and close are necessary
> before readall, because we have multiple handles to the write end of the
> pipe, and need to close all of them before the read end will receive the
> EOF signal*
>
>
> On Sat, Jun 21, 2014 at 12:51 PM, Laszlo Hars <[email protected]
> <javascript:>> wrote:
>
>> ...can someone at least verify that the 0.3.0 Julia console output in
>> Windows is not written to STDOUT, and error messages are not written to
>> STDERR? (The results of print() do appear on STDOUT)
>>
>
>
