How to check if an array is empty without using any built in functions

x = [];

x == [] , gives 0×0 empty logical array...

Answer 1

[Wan Ji]

Use isempty

x = [];
isempty(x)

Then the answer is

ans =

  logical

   1

[Wan Ji]

@sai krishna vollala

Hi friend,

What do you mean by saying without using any built in functions?

Even x==[], the operator == is a built-in function.

So isempty(x), isqual(x,[]), or even numel(x)==0, length(x)==0

all the above can respond to your question.

Answer 2

[Sulaymon Eshkabilov]

x=[];
[R,C]=size(x)
if R==0 & C==0
disp('Empty')
else
    disp('Contains STH')
end