what does A(~A) mean?

Hi

could someone tell me what does following code mean please?

A(~A)=inf; %A is a vector with zero and non-zero numbers.

Best,

Answer 1

[Walter Roberson]

It works out the same as

A(A~=0) =inf

Which is to say that it replaces all nonzero entries with infinity.

[Hussein Dadashi]

Thank you so much