tilde use before if condition

I was looking at on Matlab code , I could not understand the use of tilde ~ before if condition .

if ~isfield(ArgDS,'mu')

Answer 1

[Star Strider]

The tilde ‘~’ is a logical negation. So the if condition will be true when 'mu' is not a field of the ‘ArgDS’ structure.

[boureghda mohammed]

Thanks for the clarification "Star Strider"

[Star Strider]

My pleasure.