How to decipher matlab function syntax ambiguity -

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• what @ operator in matlab? 3 answers

i cannot find syntax anywhere

y = @(beta, x)x*beta; 

where x vector or matrix lets say. @ used reference function can have more 1 externally visiuble function in same .m file? sorry i'm new matlab can't find in documentation

that way define anonymous function in matlab. same

function result = y(beta, x)  result = x * beta; 

but without needing m-file or subfunction define it. can constructed within other m-files or within expression. typical use throw-away function inside call of complex function needs function 1 of inputs, i.e.:

>> arrayfun(@(x) x^2, 1:10)  ans =       1     4     9    16    25    36    49    64    81   100 

i use them lot refactor list of repetitive statements

a = complex_expression(x, y, z, 1) b = complex_expression(x, y, z, 3) c = complex_expression(x, y, z, 8) 

into

f = @(n) complex_expression(x, y, z, n) = f(1) b = f(3) c = f(8) 

more info mathworks. more or less same lambda expression in python.