I want to let Julia to known the number of parameters which I have provided in one function. Like nargin in MATLAB. What should I do?
It’s hard to imagine a case where
nargin would be a better choice than just using Julia’s multiple dispatch and keyword arguments. Can you provide a short pseudocode example of what you’re trying to do?
I second @stillyslalom. However it could be done with
function f(args...) nargin = length(args) # now what? end
For example,I have such a function:
function A(file1,file2,file3,img1,img2,img3,...) # I need to known how many pictures and files it should be offered. if (nargin < 6) file1->img1 file1<-img2 end if (nargin <10) file1->img1 file1<-img2 file2->img3 file2<-img4 end ... end
I think you should
function a(files, images) for i=1:2:length(files) ... end end
if you really want to pass them in a separate arguments
function a(args...) files = args[1:2:end÷2] imgs = args[2:2:end÷2] for i=1:length(files) .. end end
Thank you very much.