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Re^2: Changing an array from a sub

by harangzsolt33 (Beadle)
on Feb 14, 2018 at 06:28 UTC ( #1209105=note: print w/replies, xml ) Need Help??

in reply to Re: Changing an array from a sub
in thread Changing an array from a sub

Thank you very much for all your answers! I come from a JavaScript background, and in JavaScript when you make a function call, a copy of each variable is passed to the function, but if the variable is an array, then only a reference is passed. So, writing to that array will change the original array as well. It's confusing when you combine it with perl. Lol But I am trying to sort it out.
// The only way to work with arrays in JavaScript: myArray = [0, 1, 2, 3, 4]; ChangeArrayJS(myArray); function ChangeArrayJS(ARRAY) { ARRAY[2] = 'JS'; // changes myArray var COPY_OF_ARRAY = ARRAY; COPY_OF_ARRAY[2] = 'this will be lost'; }

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