Thanks Stefan, esc does the trick :)
I'll have to find a better way to copy/paste from ipython notebookds.
creating pull request in the scipy_2014_julia :)
On Sunday, September 14, 2014 5:13:41 PM UTC-7, David P. Sanders wrote:
El domingo, 14 de septiembre de 2014 14:28:47 UTC-5, Zouhair Mahboubi
escribió:
New Julia user here :)
Following the scipy/julia tutorial by D. Sanders and playing around with
Macros
http://nbviewer.ipython.org/github/dpsanders/scipy_2014_julia/blob/master/Metaprogramming.ipynb
I'm glad you find the tutorial useful!
But it's certainly far from perfect, and certainly needs some
modifications, which I will be happy to implement if you send a Pull
Request!
He has in there an example of macros. I was playing around with that and
I ran into a case where I don't understand why the expanded code ends up
introducing what seems to be a local variable. And this depends solely on
whether `expr2` contains `i += 1` or `i = i + 1`.
Can someone take the time to explain why i one case the macro expansion
introduces a local variable? And how would one get around that in this case?
Thanks,
-z
In [111]:
macro until(expr1, expr2)
quote
#:(
while !($expr1) # code interpolation
$expr2
end
#)
end
end
In [122]:
expr1 =
quote
i = 0
@until i==10 begin
print(i)
i += 1
end
end;
expr2 =
quote
i = 0
@until i==10 begin
print(i)
i = i + 1
end
end;
In [123]:
eval(expr1)
0123456789
In [124]:
eval(expr2)
i not defined
while loading In[124], in expression starting on line 1
in anonymous at In[122]:4
In [125]:
macroexpand(expr1)
div style=position: absolute; height: 30px; w
...
