Julia users,
I'm fiddling around with Julia's strings & metaprogramming. I am
constructing a function by concatenating a bunch of strings together
to create my function, like this:
function return_fcn(N)
P = string("function f$N(X::Vector)\n")
for i in 1:N
P = string(P, "x$i = X[$i];\n");
end
P = string(P, "mu = X[$(N+1)];\n")
etc....
When I execute this code, I get:
julia> y = return_fcn(2)
"function f2(X::Vector)\nx1 = X[1];\nx2 = X[2];\nmu = X[3];\n"
However, what I really want to see is
function f2(X::Vector)
x1 = X[1];
x2 = X[2];
mu = X[3];
"show(y)" doesn't seem to do what I want. Later, when I do
eval(parse(y))
then I get a function which executes correctly. My problem is simply
that I can't get Julia to give me a string I can read easily. This
will be a very big issue for me when N -> 1024, 2048, etc....
Questions:
1. How can I escape the \n to get a real <CR><LF> in my displayed
string?
2. Is this the optimal way to construct a program for later execution
(i.e. metaprogramming)?
Thanks for all wisdom you have to offer.
Stuart
