How to create your own function handling in MatLab? -- MatLab

[Ans]

assign it to target function.

e.g.

function y = computeSquare(x)
y = x.^2;
end

f=computerSquare(x)

e.g.

h = @ones;
%they are equivalent
a = h()
a=h

more details on:

Create Function Handle - MATLAB & Simulink (mathworks.com)