Your instructions, Isaiah, fixed the IJulia installation problem. It is
working now! Thanks!
With your help I could get a step closer to a possible solution to my
original problem: catching syntax errors.
~~~
err = nothing
rderr,wrerr = redirect_stderr()
@schedule begin
global err
while(true)
err = readavailable(rderr)
end
end
~~~
At this point I paste an expression into the Julia console. If it is valid,
the err global variable stays empty. If there is any error, the err
variable contains something, so I know there was an error. I have to set
"err = nothing" again, and I can go on.
The only problem is that err contains a meaningless string. If I print out
"readavailable(rderr)" it has good information about the error, but the
assignment to a variable removes all readable text. Can I fix that? Like
printing to a variable instead of a stream?
All these look terrible. There could be a few nice solutions, if Julia was
modified a bit:
- A function or global variable, lastError, containing the description of
the last error. It can be cleared manually, or automatically when a new
user input is entered.
- A syntax error could be made catch-able in the eval() command
- STDERR could be made redirectable to a memory buffer or regular IOStrem
or a pipe...
