I am relieved to hear you what not use it in practice, I was trying really
hard to grasp the utility of it :-) It is a very elegant piece of code,
though.
Den torsdag den 25. februar 2016 kl. 01.18.16 UTC+1 skrev Tom Breloff:
>
> I think he was just referring to the fact that it's "one more thin
understood ...
i was really focusing on this:
"... essentially each macro introduces a new keyword."
which is either true, or false ... and not having any real
experience with the macro space i am assuming that
it is true ...
if it is true, then it seems reasonable to have the means
to under
I think he was just referring to the fact that it's "one more thing to
remember". For the record, I would never actually use this macro, for
reasons implied by Mauro, but there are other, similar uses that this
strategy could be benficial. The choice (IMO) should come down to which is
more intuiti
interesting ...
what facilities are available to survey
and reason about this "keyword" space ?
On Wednesday, February 24, 2016 at 11:05:34 AM UTC-8, Mauro wrote:
>
> ... essentially each macro introduces a new keyword.
>
> this is awesome
>
> thanks!
A small word of caution: macros can make it harder for others (or your
future self) to read the code, as essentially each macro introduces a
new keyword. Just something to consider when introducing a macro;
awesome as they are.
> On Wednesday, February 24, 2016 at 3
this is awesome
thanks!
On Wednesday, February 24, 2016 at 3:32:48 PM UTC+1, Tom Breloff wrote:
>
> Enjoy:
>
>
> julia> macro n(expr::Expr)
>@assert expr.head == :function
>s = expr.args[1].args[2]
>if isa(s,Expr) && s.head == :(::)
>s = s.args[
Enjoy:
julia> macro n(expr::Expr)
@assert expr.head == :function
s = expr.args[1].args[2]
if isa(s,Expr) && s.head == :(::)
s = s.args[1]
end
unshift!(expr.args[2].args, :(n = length($s)))
esc(expr)
end
julia
Hi everybody,
I have several functions operating on one dimensional vectors.
Within each function the first thing I do is to define variable n holding
the length of input vector x:
n = length(x)
Is that possible to factor out this pattern somehow from all functions
definitions?
(...like 't
